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lavc/vvc: Increase size of ctb_size_y 

sps_log2_ctu_size_minus5 is between 0 and 2, with 3 reserved for future
use.  The VVC decoder allows sps_log2_ctu_size_minus5 to be 3, and so
ctb_size_y should be at least 16 bits to prevent overflows.  An
alternative patch would leave sps_log2_ctu_size_minus5 as 8 bits and
disallow sps_log2_ctu_size_minus5 = 3.

Signed-off-by: Frank Plowman <post@frankplowman.com>
This commit is contained in:
Frank Plowman 2024-04-13 11:55:54 +01:00 committed by Nuo Mi
parent 5e380bcdb1
commit 993c231de0
1 changed files with 1 additions and 1 deletions
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libavcodec/vvc/ps.h
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@ -69,7 +69,7 @@ typedef struct VVCSPS {
uint8_t bit_depth; ///< BitDepth
uint8_t qp_bd_offset; ///< QpBdOffset
uint8_t ctb_log2_size_y; ///< CtbLog2SizeY
uint8_t ctb_size_y; ///< CtbSizeY
uint16_t ctb_size_y; ///< CtbSizeY
uint8_t min_cb_log2_size_y; ///< MinCbLog2SizeY
uint8_t min_cb_size_y; ///< MinCbSizeY
uint8_t max_tb_size_y; ///< MaxTbSizeY