ref: 8c48c943e7c082b4330061e74ce85547253de301
dir: /vp8/common/arm/neon/dc_only_idct_add_neon.asm/
;
; Copyright (c) 2010 The WebM 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_dc_only_idct_add_neon|
ARM
REQUIRE8
PRESERVE8
AREA ||.text||, CODE, READONLY, ALIGN=2
;void vp8_dc_only_idct_add_neon(short input_dc, unsigned char *pred_ptr,
; unsigned char *dst_ptr, int pitch, int stride)
; r0 input_dc
; r1 pred_ptr
; r2 dst_ptr
; r3 pitch
; sp stride
|vp8_dc_only_idct_add_neon| PROC
add r0, r0, #4
asr r0, r0, #3
ldr r12, [sp]
vdup.16 q0, r0
vld1.32 {d2[0]}, [r1], r3
vld1.32 {d2[1]}, [r1], r3
vld1.32 {d4[0]}, [r1], r3
vld1.32 {d4[1]}, [r1]
vaddw.u8 q1, q0, d2
vaddw.u8 q2, q0, d4
vqmovun.s16 d2, q1
vqmovun.s16 d4, q2
vst1.32 {d2[0]}, [r2], r12
vst1.32 {d2[1]}, [r2], r12
vst1.32 {d4[0]}, [r2], r12
vst1.32 {d4[1]}, [r2]
bx lr
ENDP
END