This change has no performance impact. It prepares the proper
function interface for better performance optimization.
Change-Id: I12e2f2deaf7f3adc603de0a74852116468c762f6
Bitdepth 10/12:
Fit coefficient range into 32 bits
Fit codfficient * const range into 32 bits
Bitdepth 8:
Fit coefficient range into 16 bits
Fit codfficient * constant range into 32 bits
Change-Id: I50b5a3132e8a9f5155c971ab0f6eb52876d2b5ca
Makes a set of 16 transforms total, adding all 1D
combinations of ADST and FlipADST, and removng all DST
transforms.
lowres, midres both improve by about 0.1% and hdres by
-0.378% in BDRATE but with fewer transforms that are also
simpler.
Further experiments to continue later.
Change-Id: I7348a4c0e12078fdea5ae3a2d36a89a319ffcc6e
In preparation for adding more 1D variants with ADST/FlipADST/etc.
BDRATE actually improves by 0.21% on lowres.
Change-Id: I2fa4720c69fe001fa666119a284dfc6b17fffab2
This commit enables the hybrid 1-D/2-D transform coding scheme for
high bit-depth setting. It improves the compression performance of
ext-tx experiment by 0.98% for lowres_all set.
Change-Id: Ic27f5037f2c36b095a93b9f15dbae34bdcdf00aa
This commit enables a hybrid 1-D/2-D transform coding scheme and
the accompany entropy coding system. It currently uses hybrid
1-D/2-D DCT transform coding. It provides coding performance gains:
lowres_all 0.55%
hdres_all 0.43%
Change-Id: I2b30dcafd21eb2bb3371f6e854cbab440a4dfa78
Adds new 32x32 masked 1-d transforms that combine 1-D length-16
DCT with length-16 identity transforms.
To be continued in subsequent patches.
Change-Id: I0b4f66492d44c079b3c3b531ba48a97201de1484
Removes the USE_DST2 flag that was on by default. DST2 performs
slightly better that DST1 and is faster to compute.
Change-Id: Ifb788f3f0a0e1995d7625230cec144b876f01206
The DST2 is implemented by input alternate sign-flip, followed
by DCT, followed by output reversal.
Results are roughly the same, but it should be easier to optimize
the DST2.
[Interestingly a mtrix multuiply implementation is about 0.1%
better].
Change-Id: If9ae5fdba87767fb0e6c163a62b77ee66a8d3afc
Add inv_txfm and highbd_inv_txfm as facades of inverse transform
such that the code flow in encodemb.c can be simpler
Change-Id: Iea45fd22dd8b173f8eb3919ca6502636f7bcfcf7
When using FLIPADST, the vp10_inv_txfm_add functions used to flip
the destination array, add the result of the inverse transform, to it
and then flip the destination back. This has been replaced by
flipping the result of the inverse transform before adding it to the
destination. Up-Down flipping is done by negating the destination
stride, and staring from the bottom, so it should now be free.
Left-right flipping is done with the usual SSE2 instructions in the
optimized code.
The C functions match the SSE2 functions as expected, so the C functions
now do the flipping as well when required. Adding this cleanly required
some refactoring of the C functions, but there is no measurable
performance impact when ext-tx is not enabled.
Encode speedup with ext-tx enabled is about 3%.
Change-Id: I5b04e5d720f0b9f0d54fd8607a8764f2314c7234
These tables were out of sync with the indexing enum since the
refactoring in commit 4f16f119 (change 303389), due to the removal
of the ext_tx_to_txtype lookup table. This patch just puts them
back in order.
Change-Id: Ieb7d57654f61b99b511d54c9ba09abbd5e8d0d14
Allows inter and intra tx_types to have different sets of
transforms for different tx_size/sb_type combinations.
Change-Id: Ic0ac1daef7a9fb15c4210271e4d04cd36e5cec8e
Adds an early termination to the ext_tx search, and also
implements the DST transforms more efficiently.
About 4 times faster with the ext-tx experiment.
There is a 0.09% drop in performance on derflr from 1.735% to
1.648%, but worth it with the speedup achieved.
Change-Id: I2ede9d69c557f25e0a76cd5d701cc0e36e825c7c
Resolved Conflicts in the following files:
configure
vp10/common/idct.c
vp10/encoder/dct.c
vp10/encoder/encodemb.c
vp10/encoder/rdopt.c
Change-Id: I4cb3986b0b80de65c722ca29d53a0a57f5a94316
Creates new hybrid transforms combining symmetric DST with
ADST and DCT. Thus a total of 16 transforms are supported.
derfl: +1.659% (up about 0.2%)
Change-Id: Idde1cecdb59527890bf05da740099c3f6a5b9764
Does not include DST1 yet.
derflr: +1.437 (8-bit internal), +7.243 (12-bit internal)
with --enable-ext-tx
Change-Id: I91f1759fd2de794755eb6384cda52e80e979cb7d
Angie Chiang
Jingning Han
Yi Luo
Debargha Mukherjee
Geza Lore
Yaowu Xu
hui su
Ronald S. Bultje