tree 6b0def39ceb2f6ff9592d75776e7d74bf3e2ccc9
parent 42086103ca930e4a8ec5190d8d34b4654a764e5c
author Paul Wilkins <paulwilkins@google.com> 1585825365 +0100
committer Paul Wilkins <paulwilkins@google.com> 1585843729 +0000

Adjustment to KF boost in STRICT_RC mode.

Imposes a maximum kf boost when STRICT_RC is selected.

For strict RC mode this gives substantial gains.
(a psnr, ov psnr, ssim, psnr hvs, vmaf)

If ALT_ARF_ALLOCATION is not enabled the gains are as follows:

Low Res  -3.840	-5.318	-2.770	-4.692	-6.110
UGC 360  -1.116	-2.456	-0.306	-2.734	-3.439
Mid Res   0.049	 0.018	 0.618	-0.055	-0.571
Hd Res   -1.251	-1.397	-0.973	-1.510	-1.911

If ALT_ARF_ALLOCATION is enabled the gains are:

Low Res  -1.865	-3.369	-0.919	-2.813	-4.539
UGC 360  -0.641	-1.688	-0.438	-1.796	-2.635
Mid Res   0.042	0.216	0.838	-0.070	-0.599
Hd Res   -0.585	-0.635	-0.327	-0.699	-1.104

Where Strict_RC is enabled and the new limit on KF boost is in force
the gain from selecting ALT_REF_ALLOCATION is now:

Low Res  -24.355 -27.486 -18.352 -27.127 -29.144
UGC 360  -16.470 -20.157 -11.792 -19.504 -18.558
Mid Res  -10.518 -11.066 -6.754  -11.317 -9.881
Hd Res   -18.942 -23.513 -14.666 -20.392 -28.304

Change-Id: Ic8021317ba1c3096e0da59b5941cb19b9b20e210