bx lr
+.global bgr888_to_rgb565
+bgr888_to_rgb565:
+ @ r2 /= 48
+ mov r2, r2, lsr #4
+ movw r3, #0x5556
+ movt r3, #0x5555
+ umull r12,r2, r3, r2
+
+ mov r3, #0x07e0
+ vdup.16 q15, r3
+0:
+ vld3.8 {d1-d3}, [r1, :64]!
+ vld3.8 {d5-d7}, [r1, :64]!
+
+ vshll.u8 q8, d2, #3 @ g
+ vshll.u8 q9, d6, #3
+ vshr.u8 d0, d3, #3 @ b
+ vshr.u8 d4, d7, #3
+ vzip.8 d0, d1 @ rb
+ vzip.8 d4, d5
+ vbit q0, q8, q15
+ vbit q2, q9, q15
+
+ vstmia r0!, {d0,d1}
+ vstmia r0!, {d4,d5}
+ subs r2, r2, #1
+ bne 0b
+
+ bx lr
+
+
@ vim:filetype=armasm