69 lines
1.9 KiB
NASM
69 lines
1.9 KiB
NASM
|
;
|
||
|
|
; Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
|
||
|
|
;
|
||
|
|
; Use of this source code is governed by a BSD-style license and patent
|
||
|
|
; grant that can be found in the LICENSE file in the root of the source
|
||
|
|
; tree. 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
|