| ; |
| ; Copyright (c) 2010 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 |vp8_recon_b_neon| |
| ARM |
| REQUIRE8 |
| PRESERVE8 |
| |
| AREA ||.text||, CODE, READONLY, ALIGN=2 |
| |
| ; r0 unsigned char *pred_ptr, |
| ; r1 short *diff_ptr, |
| ; r2 unsigned char *dst_ptr, |
| ; r3 int stride |
| |
| |vp8_recon_b_neon| PROC |
| mov r12, #16 |
| |
| vld1.u8 {d28}, [r0], r12 ;load 4 data/line from pred_ptr |
| vld1.16 {q10, q11}, [r1]! ;load data from diff_ptr |
| vld1.u8 {d29}, [r0], r12 |
| vld1.16 {q11, q12}, [r1]! |
| vld1.u8 {d30}, [r0], r12 |
| vld1.16 {q12, q13}, [r1]! |
| vld1.u8 {d31}, [r0], r12 |
| vld1.16 {q13}, [r1] |
| |
| vmovl.u8 q0, d28 ;modify Pred data from 8 bits to 16 bits |
| vmovl.u8 q1, d29 ;Pred data in d0, d2, d4, d6 |
| vmovl.u8 q2, d30 |
| vmovl.u8 q3, d31 |
| |
| vadd.s16 d0, d0, d20 ;add Diff data and Pred data together |
| vadd.s16 d2, d2, d22 |
| vadd.s16 d4, d4, d24 |
| vadd.s16 d6, d6, d26 |
| |
| vqmovun.s16 d0, q0 ;CLAMP() saturation |
| vqmovun.s16 d1, q1 |
| vqmovun.s16 d2, q2 |
| vqmovun.s16 d3, q3 |
| add r1, r2, r3 |
| |
| vst1.32 {d0[0]}, [r2] ;store result |
| vst1.32 {d1[0]}, [r1], r3 |
| add r2, r1, r3 |
| vst1.32 {d2[0]}, [r1] |
| vst1.32 {d3[0]}, [r2], r3 |
| |
| bx lr |
| |
| ENDP |
| END |
