| ; |
| ; 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_recon4b_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_recon4b_neon| PROC |
| vld1.u8 {q12, q13}, [r0]! ;load data from pred_ptr |
| vld1.16 {q8, q9}, [r1]! ;load data from diff_ptr |
| vld1.u8 {q14, q15}, [r0] |
| vld1.16 {q10, q11}, [r1]! |
| |
| vmovl.u8 q0, d24 ;modify Pred data from 8 bits to 16 bits |
| vmovl.u8 q1, d25 |
| vmovl.u8 q2, d26 |
| vmovl.u8 q3, d27 |
| vmovl.u8 q4, d28 |
| vmovl.u8 q5, d29 |
| vmovl.u8 q6, d30 |
| vld1.16 {q12, q13}, [r1]! |
| vmovl.u8 q7, d31 |
| vld1.16 {q14, q15}, [r1] |
| |
| vadd.s16 q0, q0, q8 ;add Diff data and Pred data together |
| vadd.s16 q1, q1, q9 |
| vadd.s16 q2, q2, q10 |
| vadd.s16 q3, q3, q11 |
| vadd.s16 q4, q4, q12 |
| vadd.s16 q5, q5, q13 |
| vadd.s16 q6, q6, q14 |
| vadd.s16 q7, q7, q15 |
| |
| vqmovun.s16 d0, q0 ;CLAMP() saturation |
| vqmovun.s16 d1, q1 |
| vqmovun.s16 d2, q2 |
| vqmovun.s16 d3, q3 |
| vqmovun.s16 d4, q4 |
| vqmovun.s16 d5, q5 |
| vqmovun.s16 d6, q6 |
| vqmovun.s16 d7, q7 |
| add r0, r2, r3 |
| |
| vst1.u8 {q0}, [r2] ;store result |
| vst1.u8 {q1}, [r0], r3 |
| add r2, r0, r3 |
| vst1.u8 {q2}, [r0] |
| vst1.u8 {q3}, [r2], r3 |
| |
| bx lr |
| |
| ENDP |
| END |
