| ; |
| ; Copyright (c) 2013 The WebM project authors. All Rights Reserved. |
| ; |
| ; Use of this source code is governed by a BSD-style license |
| ; that can be found in the LICENSE file in the root of the source |
| ; tree. An additional intellectual property rights grant can be found |
| ; in the file PATENTS. All contributing project authors may |
| ; be found in the AUTHORS file in the root of the source tree. |
| ; |
| |
| EXPORT |vpx_convolve_avg_neon| |
| ARM |
| REQUIRE8 |
| PRESERVE8 |
| |
| AREA ||.text||, CODE, READONLY, ALIGN=2 |
| |
| |vpx_convolve_avg_neon| PROC |
| push {r4-r6, lr} |
| ldrd r4, r5, [sp, #32] |
| mov r6, r2 |
| |
| cmp r4, #32 |
| bgt avg64 |
| beq avg32 |
| cmp r4, #8 |
| bgt avg16 |
| beq avg8 |
| b avg4 |
| |
| avg64 |
| sub lr, r1, #32 |
| sub r4, r3, #32 |
| avg64_h |
| pld [r0, r1, lsl #1] |
| vld1.8 {q0-q1}, [r0]! |
| vld1.8 {q2-q3}, [r0], lr |
| pld [r2, r3] |
| vld1.8 {q8-q9}, [r6@128]! |
| vld1.8 {q10-q11}, [r6@128], r4 |
| vrhadd.u8 q0, q0, q8 |
| vrhadd.u8 q1, q1, q9 |
| vrhadd.u8 q2, q2, q10 |
| vrhadd.u8 q3, q3, q11 |
| vst1.8 {q0-q1}, [r2@128]! |
| vst1.8 {q2-q3}, [r2@128], r4 |
| subs r5, r5, #1 |
| bgt avg64_h |
| pop {r4-r6, pc} |
| |
| avg32 |
| vld1.8 {q0-q1}, [r0], r1 |
| vld1.8 {q2-q3}, [r0], r1 |
| vld1.8 {q8-q9}, [r6@128], r3 |
| vld1.8 {q10-q11}, [r6@128], r3 |
| pld [r0] |
| vrhadd.u8 q0, q0, q8 |
| pld [r0, r1] |
| vrhadd.u8 q1, q1, q9 |
| pld [r6] |
| vrhadd.u8 q2, q2, q10 |
| pld [r6, r3] |
| vrhadd.u8 q3, q3, q11 |
| vst1.8 {q0-q1}, [r2@128], r3 |
| vst1.8 {q2-q3}, [r2@128], r3 |
| subs r5, r5, #2 |
| bgt avg32 |
| pop {r4-r6, pc} |
| |
| avg16 |
| vld1.8 {q0}, [r0], r1 |
| vld1.8 {q1}, [r0], r1 |
| vld1.8 {q2}, [r6@128], r3 |
| vld1.8 {q3}, [r6@128], r3 |
| pld [r0] |
| pld [r0, r1] |
| vrhadd.u8 q0, q0, q2 |
| pld [r6] |
| pld [r6, r3] |
| vrhadd.u8 q1, q1, q3 |
| vst1.8 {q0}, [r2@128], r3 |
| vst1.8 {q1}, [r2@128], r3 |
| subs r5, r5, #2 |
| bgt avg16 |
| pop {r4-r6, pc} |
| |
| avg8 |
| vld1.8 {d0}, [r0], r1 |
| vld1.8 {d1}, [r0], r1 |
| vld1.8 {d2}, [r6@64], r3 |
| vld1.8 {d3}, [r6@64], r3 |
| pld [r0] |
| pld [r0, r1] |
| vrhadd.u8 q0, q0, q1 |
| pld [r6] |
| pld [r6, r3] |
| vst1.8 {d0}, [r2@64], r3 |
| vst1.8 {d1}, [r2@64], r3 |
| subs r5, r5, #2 |
| bgt avg8 |
| pop {r4-r6, pc} |
| |
| avg4 |
| vld1.32 {d0[0]}, [r0], r1 |
| vld1.32 {d0[1]}, [r0], r1 |
| vld1.32 {d2[0]}, [r6@32], r3 |
| vld1.32 {d2[1]}, [r6@32], r3 |
| vrhadd.u8 d0, d0, d2 |
| vst1.32 {d0[0]}, [r2@32], r3 |
| vst1.32 {d0[1]}, [r2@32], r3 |
| subs r5, r5, #2 |
| bgt avg4 |
| pop {r4-r6, pc} |
| ENDP |
| |
| END |
