BOX_C2_LOG        631 3rdparty/libjpeg/jquant2.c #define BOX_C2_ELEMS  (1<<BOX_C2_LOG)
BOX_C2_LOG        635 3rdparty/libjpeg/jquant2.c #define BOX_C2_SHIFT  (C2_SHIFT + BOX_C2_LOG)
BOX_C2_LOG        876 3rdparty/libjpeg/jquant2.c   c2 >>= BOX_C2_LOG;
BOX_C2_LOG        898 3rdparty/libjpeg/jquant2.c   c2 <<= BOX_C2_LOG;