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_recon4b_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_recon4b_neon| PROC 25 vld1.u8 {q12, q13}, [r0]! ;load data from pred_ptr 26 vld1.16 {q8, q9}, [r1]! ;load data from diff_ptr 27 vld1.u8 {q14, q15}, [r0] 28 vld1.16 {q10, q11}, [r1]! 29 30 vmovl.u8 q0, d24 ;modify Pred data from 8 bits to 16 bits 31 vmovl.u8 q1, d25 32 vmovl.u8 q2, d26 33 vmovl.u8 q3, d27 34 vmovl.u8 q4, d28 35 vmovl.u8 q5, d29 36 vmovl.u8 q6, d30 37 vld1.16 {q12, q13}, [r1]! 38 vmovl.u8 q7, d31 39 vld1.16 {q14, q15}, [r1] 40 41 vadd.s16 q0, q0, q8 ;add Diff data and Pred data together 42 vadd.s16 q1, q1, q9 43 vadd.s16 q2, q2, q10 44 vadd.s16 q3, q3, q11 45 vadd.s16 q4, q4, q12 46 vadd.s16 q5, q5, q13 47 vadd.s16 q6, q6, q14 48 vadd.s16 q7, q7, q15 49 50 vqmovun.s16 d0, q0 ;CLAMP() saturation 51 vqmovun.s16 d1, q1 52 vqmovun.s16 d2, q2 53 vqmovun.s16 d3, q3 54 vqmovun.s16 d4, q4 55 vqmovun.s16 d5, q5 56 vqmovun.s16 d6, q6 57 vqmovun.s16 d7, q7 58 add r0, r2, r3 59 60 vst1.u8 {q0}, [r2] ;store result 61 vst1.u8 {q1}, [r0], r3 62 add r2, r0, r3 63 vst1.u8 {q2}, [r0] 64 vst1.u8 {q3}, [r2], r3 65 66 bx lr 67 68 ENDP 69 END 70
