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    Enable background detection for adaptive quantizer control · 80a4f559
    Jingning Han authored
    This commit enables a background detection approach for adaptive
    quantizer control. It combines the cyclic refresh pattern and the
    background information to determine the segment id for adaptive
    quantizer selection, prior to the non-RD mode decision process.
    It hence allows proper quantization information update for a more
    precise rate-distortion modeling in the non-RD mode decision.
    The compression performance of speed -5 for rtc set is improved
    by 2.5%, at no speed change.
    Change-Id: Ic3713e8ed9185b403b5b1679d19dabd57506d452