BOX_C1_LOG        630 3rdparty/libjpeg/jquant2.c #define BOX_C1_ELEMS  (1<<BOX_C1_LOG)
BOX_C1_LOG        634 3rdparty/libjpeg/jquant2.c #define BOX_C1_SHIFT  (C1_SHIFT + BOX_C1_LOG)
BOX_C1_LOG        875 3rdparty/libjpeg/jquant2.c   c1 >>= BOX_C1_LOG;
BOX_C1_LOG        897 3rdparty/libjpeg/jquant2.c   c1 <<= BOX_C1_LOG;