55 lines
1.5 KiB
NASM
55 lines
1.5 KiB
NASM
;
|
|
; Copyright (c) 2010 The VP8 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
|