Moving code that gets band_translate array from get_scan_and_band()
function to get_band_translate() function. Renaming get_scan_and_band() to
get_scan().
Change-Id: I43047c205a1ca2a6e24be44db39dc04b7a385008
This should be similar to what x264 does with --aq-mode 1.
It works well with clips like parkjoy and touhou
(http://x264.nl/developers/Dark_Shikari/LosslessTouhou.mkv).
At low bitrates, the segmentation signaling overhead may negate the
benefits of this feature.
(PGW) Default changed to feature OFF to allow provisional merge.
Change-Id: I938abf9bb487e1d4ad3b0264ea03d9826275c70b
Updated the encoder to handle frames that are coded
intra-only. Intra-only frames must be non-showable,
that is, the "show frame" flag must be set to 0 in
the frame header.
Tested by forcing the ARF frames to be coded intra-
only.
Note: The rate control code will need to be modified
to account for intra-only frames better than they
are currently handled.
Change-Id: I6a9dd5337deddcecc599d3a44a7431909ed21079
Remove the semicolon in the definition of vp9_zero macro. Make all
the use cases of vp9_zero of consistent format.
Change-Id: Ibaf9751e8595872b12766381a93d185a4d90df8f
Use the zcoeff_blk buffer of PICK_MODE_CONTEXT to store the indexes
of all-zero-coeff block of the current best mode. Remove the temporary
buffer best_zcoeff_blk defined in the rate-distortion optimization
loop. This improves the speed performance by about 0.5% in all speed
settings.
Change-Id: Ie3e15988ddfa581eafa2e19a8228d3fe4a46095c
This commit moves token_cache buffer into macroblock struct, instead
of defining as a local variable in cost_coeffs. This avoids repeatedly
re-allocating memory space in the rate-distortion optimization loop.
The runtime at speed 0 reduces:
bus 2000kbps, 161692ms to 159951ms
football 600kbps, 229505ms to 225821ms
Change-Id: If7da6b0b6d8c5138a16271a33c4548fba33d8840
Values of MODE_UPDATE_PROB and VP9_COEF_UPDATE_PROB are equal, so replacing
them with one constant. Inlining appropriate arguments for functions:
vp9_cond_prob_diff_update (encoder)
vp9_diff_update_prob (decoder)
Change-Id: I1255a1cb477743b799b3bfbbcd8de6b32b067338
Converts the constant rddiv parameter to 128 (from 100) and
implements RDCOST with bit-shift rather than multiplication.
Other parameters are also adjusted to roughly keep the same
balance between Rate and Distortion.
There is a slight speed-up of about 0.5-1% (at speed 0) as
testted on football_cif.
There is a slight change in performance due to small change
in the parameters.
derfraw300: +0.033%
stdhdraw250; +0.102%
Change-Id: I70ac69f58fa71c83108f68fe41796cd19d1fc760
The commit changes to mask available intra prediction modes for test
based on prediction block size.
With this patch, encoding time of CpuUsed 2 reduces from 10% to 20% for
HD clips with a compression drop of 0.2%
Change-Id: I65f320f1237c0f5ae3a355bf7caf447f55625455
When the codec in VBR (or cq) mode hits its max q limits and is
struggling to hit a target bandwidth, the bit target per frame collapses.
In the first instance normal frames cap out at the maximum allowed
Q and then the ARF and GFs do the same. This latter behavior is not
generally desirable as GFs and ARFs are only effective from a quality
and data rate perspective if they have at lease some level of -Q delta
compared to the surrounding frames.
In this patch I define a separate max Q for GFs and ARFs that is
derived from but somewhat lower than that defined for normal frames.
In effect there is a minimum Q delta that will always be available for
GFs and ARFs regardless of the target rate and MAXQ setting.
This may of course mean that the absolute lowest rate obtainable for
a given clip is somewhat higher.
Change-Id: I268868b28401900d0cd87e51e609cd3b784ab54a