tree 9e9435c237752cac61a1704a238790f4948635f2
parent 66603e7eeeee50fbd8846a093a0ccd8e9695f24b
author Marco Paniconi <marpan@google.com> 1578547733 -0800
committer Marco Paniconi <marpan@google.com> 1578676189 +0000

rtc: golden update under cyclic refresh

For 1 pass rtc mode: when golden is used as
periodic updated reference (i.e., gld_fixed_slot),
disable the cyclic refresh on this golden update frame.
By turning off the lower segment delta-qp, the frame level
qp will generally be lower, making the gld update frame
overall slightly better reference.

On rtc_derf for speed 7: all clips show bdrate gain,
range from 0.1 to 1.2%, with average of 0.43%.

Negligible speed/fps change.

Change-Id: Ic2fab6d19e2b0563f1375bee439054d67be06636