| .arch armv7-a |
| .fpu neon |
| .text |
| |
| .globl yuyv422_to_yuv420sp |
| .type yuyv422_to_yuv420sp, STT_FUNC |
| .func yuyv422_to_yuv420sp |
| yuyv422_to_yuv420sp: |
| push {r4-r5,lr} |
| mul r12, r2, r3 |
| add r4, r0, r2, lsl #1 @ in_1 |
| add r5, r1, r2 @ out_1 |
| add lr, r1, r12 @ out_uv |
| 1: |
| mov r12, r2 |
| 2: |
| vld1.8 {q0}, [r0]! |
| vld1.8 {q1}, [r4]! |
| vuzp.8 d0, d1 |
| vuzp.8 d2, d3 |
| vhadd.u8 d1, d1, d3 |
| vrev16.8 d1, d1 |
| vst1.8 {d0}, [r1]! |
| vst1.8 {d2}, [r5]! |
| vst1.8 {d1}, [lr]! |
| subs r12, r12, #8 |
| bgt 2b |
| add r0, r0, r2, lsl #1 |
| add r4, r4, r2, lsl #1 |
| add r1, r1, r2 |
| add r5, r5, r2 |
| subs r3, r3, #2 |
| bgt 1b |
| pop {r4-r5,pc} |
| .endfunc |
