1 ; 2 ; Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 ; 4 ; Use of this source code is governed by a BSD-style license 5 ; that can be found in the LICENSE file in the root of the source 6 ; tree. An additional intellectual property rights grant can be found 7 ; in the file PATENTS. All contributing project authors may 8 ; be found in the AUTHORS file in the root of the source tree. 9 ; 10 11 12 EXPORT |vp8_recon2b_neon| 13 ARM 14 REQUIRE8 15 PRESERVE8 16 17 AREA ||.text||, CODE, READONLY, ALIGN=2 18 19 ; r0 unsigned char *pred_ptr, 20 ; r1 short *diff_ptr, 21 ; r2 unsigned char *dst_ptr, 22 ; r3 int stride 23 24 |vp8_recon2b_neon| PROC 25 vld1.u8 {q8, q9}, [r0] ;load data from pred_ptr 26 vld1.16 {q4, q5}, [r1]! ;load data from diff_ptr 27 28 vmovl.u8 q0, d16 ;modify Pred data from 8 bits to 16 bits 29 vld1.16 {q6, q7}, [r1]! 30 vmovl.u8 q1, d17 31 vmovl.u8 q2, d18 32 vmovl.u8 q3, d19 33 34 vadd.s16 q0, q0, q4 ;add Diff data and Pred data together 35 vadd.s16 q1, q1, q5 36 vadd.s16 q2, q2, q6 37 vadd.s16 q3, q3, q7 38 39 vqmovun.s16 d0, q0 ;CLAMP() saturation 40 vqmovun.s16 d1, q1 41 vqmovun.s16 d2, q2 42 vqmovun.s16 d3, q3 43 add r0, r2, r3 44 45 vst1.u8 {d0}, [r2] ;store result 46 vst1.u8 {d1}, [r0], r3 47 add r2, r0, r3 48 vst1.u8 {d2}, [r0] 49 vst1.u8 {d3}, [r2], r3 50 51 bx lr 52 53 ENDP 54 END 55
