• Thomas Davies's avatar
    Encode and decode multiple tile groups · 80188d15
    Thomas Davies authored
    This is a manual adaptation of the following commit from aom/master:
    ce12003d
    
    The original commit message:
    
    A tile group is a set of tiles in scan order.
    
    Each tile group has a version of uncompressed and compressed headers,
    identical apart from tile group parameters.
    Encoding probability updates takes account of the number of
    headers to control overheads.
    
    The decoder supports arbitrary numbers of tile groups with
    arbitrary number of tiles. The number of tiles in a TG is
    signalled in the uncompressed header for that TG.
    
    The encoder currently only supports a fixed number
    of TGs (3, when error resilient mode is on) of equal size
    (except possibly for the last one).
    
    The average BDR performnce with 3 tile groups versus
    anchor with error resilient mode and up to 16 tiles is:
    
    NR YCbCr:      3.02%      3.04%      3.05%
    PSNRHVS:      3.09%
    SSIM:      3.06%
    MSSSIM:      3.05%
    CIEDE2000:      3.04%
    
    Change-Id: I9b97c5ed733103b9160a3a5d4370de5322c00c0b
    80188d15
configure 22.7 KB