The vp8_post_proc_down_and_across_mb_row_sse2() needs space for an
even number of macroblocks, as they are read two at a time for the
chroma planes. Round up the width during the allocation of
pp_limits_buffer to support this.
Change-Id: Ibfc10c7be290d961ab23ac3dde12a7bb96c12af0
If the threshold(limits) <= 0, skipped filtering and copied the
frame directly. Also, fixed memory allocation checking.
Change-Id: If3d79d5b2bcb71b9777e6eb5cba1384585131e22
If a reference frame is forced because of low dissimilarity, then
shut off the search of intra modes. This change has mixed results. On
one clip (QVGA), it hurt quality by ~1.5% with negligible speed impact.
On another (VGA) it had negligible affect on quality, but a ~0.2% speed
impact.
Change-Id: Ic8b07648979d732f489de5f094957e140f84d2eb
Rather than overloading the parent_ref_frame value to shut off the
search in some cases, add a new validity flag. This cleans up some
of the duplicated mr_encoder_id && mr_low_res_mv_avail checks as
well, for readability.
Change-Id: Iddad93a27066c3d85ff2f25a361ac113b288ab7b
1. Algorithm modification:
Instead of having same filter threshold for a whole frame, now we
allow the thresholds to be adjusted for each macroblock. In current
implementation, to avoid excessive blur on background as reported
in issue480(http://code.google.com/p/webm/issues/detail?id=480), we
reduce the thresholds for skipped macroblocks.
2. SSE2 optimization:
As started in issue479(http://code.google.com/p/webm/issues/detail?id=479),
the filter calculation was adjusted for better performance. The c
code was also modified accordingly. This made the deblock filter
2x faster, and the decoder was 1.2x faster overall.
Next, the demacroblock filter will be modified similarly.
Change-Id: I05e54c3f580ccd427487d085096b3174f2ab7e86
In some situations, believed to be an interaction between temporal
scalability and dropped frames, the references available to an
encoder may not be the same references available to its parent.
Previously, the code tried to force the reference frame chosen by
the parent to be used on this frame, even if it was disabled. This
was preventing the pick mode loop from running even once, which led
to a crash.
Attempts to reproduce this bug locally were unsuccessful, so it is
still undetermined what the underlying cause of this issue is. In
the specific case that was failing, the application did not set
any flags which influenced the reference selection on that frame.
ref_frame_flags indicated that the golden frame was disabled,
believed to be because the last frame updated the last and golden
frames, so golden was shut off by default. It's not clear why this
wouldn't have also been true in the lower res encoder, ie, why the
lower res encoder decided to use and/or was allowed to use the
golden frame. We weren't able to debug into the non-crashing
lower res encoder as the crash couldn't be reproduced locally.
Change-Id: Ifb265253d26963ac2afde0e20cf6792788be6af7
If a parent mb is available but is intra coded, then parent_ref_mv is
invalid. Check that the parent is inter coded before trying to access
the parent_ref_mv. Previously the parent_ref_mv was being read from
an uninitialized stack allocation, causing potential OOB reads and
other undefined behavior.
Change-Id: I0c93cd412a19c3a184bcf6decaa145b3a036a6c0
Protect the call to {Initialize,Delete}CriticalSection() with an
Interlocked{Inc,Dec}rement() pair, rather than the previous static
initialization. This should play better with AppVerifier, and fix issue
http://code.google.com/p/webm/issues/detail?id=467
Change-Id: I06eadbfac1b3b4414adb8eac862ef9bd14bbe4ad
The codec as it stood placed a keyframe one frame after a
real cut scene - and ignored datarate and other considerations.
TODO: Its possible that we should detect a keyframe and recode
the frame ( in certain circumstances) to improve quality.
Change-Id: Ia1fd6d90103f4da4d21ca5ab62897d22e0b888a8
Reset the cyclie refresh mode index in alloc_compressor_data().
This is needed to handle both cases of internal and
external spatial resizing.
Change-Id: I2697e12d45135eae2e8f0d45161811f24722312a
On an internal spatial resize, this mode index was not reset to 0,
and therefore could exceed dimensions of seg_map or cyclic_refresh_map.
Change-Id: I6fe85dbd2765eb0207a9d9f71fda8d8b8c34f075
Fixes some build issues for people building for win32 who have a
pthreads emulation layer installed.
Change-Id: I0e0003fa01f65020f6ced35d961dcb1130db37a8
This should avoid problems with blocks gettings high quality
improvement despite having recently moved:
Change-Id: Ic0af0de2d6577807fa3c553f47b55d547ef36359
Set the seg map to 0 for key frame.
In previous commit on cyclic refresh, the seg map for key frame
was not reset, and instead used the seg map from last frame.
Change-Id: I848eb2face420dfcd2f7daca6f070b9127ca938b
-Increase the amount of mbs to be refreshed.
-Replace the delta qp with a fixed and reduced delta.
-Change to the mb update loop to try to always update same amount of mbs.
Change-Id: I93ac88002fd8dc677d2337f77998ff93f64e4ff9
This change is necessary for the frame-based multithreading
implementation.
Since the postproc occurs in this call, vpxdec was modified to time around
vpx_codec_get_frame()
Change-Id: I389acf78b6003cd35e41becc16c893f7d3028523
Initialize the top line at the beginning of each frame and
the left column at the beginning of each row.
Change-Id: I5412f7ea49ffc490215cf65a62715a6c5e3a5a29
Multiple decoders were getting allocated per frame.
If the decoder crashed we exitted with out freeing
them and the next time in we'd allocate over.
This fix removes the allocation and just has 8
boolcoders in the pbi structure
Change-Id: I638b5bda23b622b43b7992aec21dd7cf6f6278da
If the decoder crashes and returned an error before it set up
block offsets but after it set up frame buffers. We had a
problem decoding the next keyframe because the block offsets
were never set.
Change-Id: Ied2866e9770d80fc66241d5e0d978d4f5f9cdd89
Adjusts some of the qualification thresholds in mfqe to eliminate
artifacts due to wrong decisions. Besides, a new qualification
criteria is used to disable mfqe if the quality of the previous
frame is itself not too good.
Change-Id: I4097c20b7fd4fcc60cc3003c1e33e8faae2ff066
