129 lines
3.4 KiB
NASM
129 lines
3.4 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_dequant_idct_neon|
|
||
|
|
ARM
|
||
|
|
REQUIRE8
|
||
|
|
PRESERVE8
|
||
|
|
|
||
|
|
AREA ||.text||, CODE, READONLY, ALIGN=2
|
||
|
|
;void vp8_dequant_idct_c(short *input, short *dq, short *output, int pitch);
|
||
|
|
; r0 short *input,
|
||
|
|
; r1 short *dq,
|
||
|
|
; r2 short *output,
|
||
|
|
; r3 int pitch,
|
||
|
|
|vp8_dequant_idct_neon| PROC
|
||
|
|
vld1.16 {q3, q4}, [r0]
|
||
|
|
vld1.16 {q5, q6}, [r1]
|
||
|
|
|
||
|
|
ldr r12, _didct_coeff_
|
||
|
|
|
||
|
|
vmul.i16 q1, q3, q5 ;input for short_idct4x4llm_neon
|
||
|
|
vmul.i16 q2, q4, q6
|
||
|
|
|
||
|
|
;|short_idct4x4llm_neon| PROC
|
||
|
|
vld1.16 {d0}, [r12]
|
||
|
|
vswp d3, d4 ;q2(vp[4] vp[12])
|
||
|
|
|
||
|
|
vqdmulh.s16 q3, q2, d0[2]
|
||
|
|
vqdmulh.s16 q4, q2, d0[0]
|
||
|
|
|
||
|
|
vqadd.s16 d12, d2, d3 ;a1
|
||
|
|
vqsub.s16 d13, d2, d3 ;b1
|
||
|
|
|
||
|
|
vshr.s16 q3, q3, #1
|
||
|
|
vshr.s16 q4, q4, #1
|
||
|
|
|
||
|
|
vqadd.s16 q3, q3, q2 ;modify since sinpi8sqrt2 > 65536/2 (negtive number)
|
||
|
|
vqadd.s16 q4, q4, q2
|
||
|
|
|
||
|
|
;d6 - c1:temp1
|
||
|
|
;d7 - d1:temp2
|
||
|
|
;d8 - d1:temp1
|
||
|
|
;d9 - c1:temp2
|
||
|
|
|
||
|
|
vqsub.s16 d10, d6, d9 ;c1
|
||
|
|
vqadd.s16 d11, d7, d8 ;d1
|
||
|
|
|
||
|
|
vqadd.s16 d2, d12, d11
|
||
|
|
vqadd.s16 d3, d13, d10
|
||
|
|
vqsub.s16 d4, d13, d10
|
||
|
|
vqsub.s16 d5, d12, d11
|
||
|
|
|
||
|
|
vtrn.32 d2, d4
|
||
|
|
vtrn.32 d3, d5
|
||
|
|
vtrn.16 d2, d3
|
||
|
|
vtrn.16 d4, d5
|
||
|
|
|
||
|
|
; memset(input, 0, 32) -- 32bytes
|
||
|
|
vmov.i16 q14, #0
|
||
|
|
|
||
|
|
vswp d3, d4
|
||
|
|
vqdmulh.s16 q3, q2, d0[2]
|
||
|
|
vqdmulh.s16 q4, q2, d0[0]
|
||
|
|
|
||
|
|
vqadd.s16 d12, d2, d3 ;a1
|
||
|
|
vqsub.s16 d13, d2, d3 ;b1
|
||
|
|
|
||
|
|
vmov q15, q14
|
||
|
|
|
||
|
|
vshr.s16 q3, q3, #1
|
||
|
|
vshr.s16 q4, q4, #1
|
||
|
|
|
||
|
|
vqadd.s16 q3, q3, q2 ;modify since sinpi8sqrt2 > 65536/2 (negtive number)
|
||
|
|
vqadd.s16 q4, q4, q2
|
||
|
|
|
||
|
|
vqsub.s16 d10, d6, d9 ;c1
|
||
|
|
vqadd.s16 d11, d7, d8 ;d1
|
||
|
|
|
||
|
|
vqadd.s16 d2, d12, d11
|
||
|
|
vqadd.s16 d3, d13, d10
|
||
|
|
vqsub.s16 d4, d13, d10
|
||
|
|
vqsub.s16 d5, d12, d11
|
||
|
|
|
||
|
|
vst1.16 {q14, q15}, [r0]
|
||
|
|
|
||
|
|
vrshr.s16 d2, d2, #3
|
||
|
|
vrshr.s16 d3, d3, #3
|
||
|
|
vrshr.s16 d4, d4, #3
|
||
|
|
vrshr.s16 d5, d5, #3
|
||
|
|
|
||
|
|
add r1, r2, r3
|
||
|
|
add r12, r1, r3
|
||
|
|
add r0, r12, r3
|
||
|
|
|
||
|
|
vtrn.32 d2, d4
|
||
|
|
vtrn.32 d3, d5
|
||
|
|
vtrn.16 d2, d3
|
||
|
|
vtrn.16 d4, d5
|
||
|
|
|
||
|
|
vst1.16 {d2}, [r2]
|
||
|
|
vst1.16 {d3}, [r1]
|
||
|
|
vst1.16 {d4}, [r12]
|
||
|
|
vst1.16 {d5}, [r0]
|
||
|
|
|
||
|
|
bx lr
|
||
|
|
|
||
|
|
ENDP
|
||
|
|
|
||
|
|
;-----------------
|
||
|
|
AREA didct4x4_dat, DATA, READWRITE ;read/write by default
|
||
|
|
;Data section with name data_area is specified. DCD reserves space in memory for 48 data.
|
||
|
|
;One word each is reserved. Label filter_coeff can be used to access the data.
|
||
|
|
;Data address: filter_coeff, filter_coeff+4, filter_coeff+8 ...
|
||
|
|
_didct_coeff_
|
||
|
|
DCD didct_coeff
|
||
|
|
didct_coeff
|
||
|
|
DCD 0x4e7b4e7b, 0x8a8c8a8c
|
||
|
|
|
||
|
|
;20091, 20091, 35468, 35468
|
||
|
|
|
||
|
|
END
|