DECLARE_ASM_CONST(8, uint64_t, red_15mask) = 0x00007c0000007c00ULL;
DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
DECLARE_ASM_CONST(8, uint64_t, blue_15mask) = 0x0000001f0000001fULL;
+DECLARE_ASM_CONST(8, uint64_t, mul15_mid) = 0x4200420042004200ULL;
+DECLARE_ASM_CONST(8, uint64_t, mul15_hi) = 0x0210021002100210ULL;
+DECLARE_ASM_CONST(8, uint64_t, mul16_mid) = 0x2080208020802080ULL;
#define RGB2YUV_SHIFT 8
#define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))