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Jingning Han authored
Speed up recursive transform block partition search. When a txfm block is selected as all zero coefficients, skip the search over further split partition. Tested with txk-sel on, this makes the speed 0 / 1 both 10 - 15% faster at medium - high target bit-rate range. The coding performance change is neutral - 0.011% better for lowres set. Change-Id: I1247f3d5a33d15bf4bc5f0bcbac2bf1f3e1aca2e
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