ref: 8c48c943e7c082b4330061e74ce85547253de301
dir: /vp8/common/arm/neon/recon2b_neon.asm/
;
; 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_recon2b_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_recon2b_neon| PROC
vld1.u8 {q8, q9}, [r0] ;load data from pred_ptr
vld1.16 {q4, q5}, [r1]! ;load data from diff_ptr
vmovl.u8 q0, d16 ;modify Pred data from 8 bits to 16 bits
vld1.16 {q6, q7}, [r1]!
vmovl.u8 q1, d17
vmovl.u8 q2, d18
vmovl.u8 q3, d19
vadd.s16 q0, q0, q4 ;add Diff data and Pred data together
vadd.s16 q1, q1, q5
vadd.s16 q2, q2, q6
vadd.s16 q3, q3, q7
vqmovun.s16 d0, q0 ;CLAMP() saturation
vqmovun.s16 d1, q1
vqmovun.s16 d2, q2
vqmovun.s16 d3, q3
add r0, r2, r3
vst1.u8 {d0}, [r2] ;store result
vst1.u8 {d1}, [r0], r3
add r2, r0, r3
vst1.u8 {d2}, [r0]
vst1.u8 {d3}, [r2], r3
bx lr
ENDP
END