Opened 11 years ago Closed 6 years ago #1077 closed defect (invalid)Log2MinIpcmCbSizeY range issue when MinCbLog2SizeY = 6
Description
In 7.4.3.2 Sequence parameter set RBSP semantics, for syntax element log2_min_pcm_luma_coding_block_size_minus3:
"The value of Log2MinIpcmCbSizeY shall be in the range of MinCbLog2SizeY to Min( CtbLog2SizeY, 5 ), inclusive."
Specifically for MinCbLog2SizeY = CtbLog2SizeY = 6 (discouraged but allowed when pcm_flag = 1):
"The value of Log2MinIpcmCbSizeY shall be in the range of 6 to 5, inclusive."
which is contradictory (assuming ranges are specified low to high).
A similar issue exists for syntax element log2_diff_max_min_pcm_luma_coding_block_size. Change History (3)comment:1 Changed 11 years ago by DefaultCC Plugin
comment:2 Changed 11 years ago by kchonocomment:3 Changed 6 years ago by bbross
As commented, the range constraint on Log2MaxIpcmCbSizeY prevents occurance of the invalid range. Note: See
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The following should fix the issue (including the Log2MaxIpcmCbSizeY constraint).
"The value of Log2MinIpcmCbSizeY shall be in the range of MinCbLog2SizeY
is changed by
"The value of Log2MinIpcmCbSizeY shall be in the range of Min( MinCbLog2SizeY, 5 ) to Min( CtbLog2SizeY, 5 ), inclusive."
What do you think?