setAdPreloadMode

Set the resolved ad-preload mode for the session.

com.dolby.optiview.ads.core.PreloadMode.PARALLEL permits warming an upcoming ad's media while content is still playing — which means holding a second video decoder. com.dolby.optiview.ads.core.PreloadMode.SINGLE_DECODER forbids it, because on constrained hardware (older TVs, some FireTV models) a second decoder starves the content player instead of speeding the ad up.

OptiViewAds already resolves this from OptiViewAdsConfig.adPreload via the portable resolvePreloadMode, but until this hook existed the result was only reported in the redacted ConfigSummary and never acted on — so parallel vs single-decoder had no behavioural effect whatsoever. Default no-op, like the other optional hooks.