94c52e4da8
When the license headers were updated, they accidentally contained trailing whitespace, so unfortunately we have to touch all the files again. Change-Id: I236c05fade06589e417179c0444cb39b09e4200d
228 lines
7.2 KiB
NASM
228 lines
7.2 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_sub_pixel_variance8x8_neon|
|
|
ARM
|
|
REQUIRE8
|
|
PRESERVE8
|
|
|
|
AREA ||.text||, CODE, READONLY, ALIGN=2
|
|
; r0 unsigned char *src_ptr,
|
|
; r1 int src_pixels_per_line,
|
|
; r2 int xoffset,
|
|
; r3 int yoffset,
|
|
; stack(r4) unsigned char *dst_ptr,
|
|
; stack(r5) int dst_pixels_per_line,
|
|
; stack(r6) unsigned int *sse
|
|
;note: most of the code is copied from bilinear_predict8x8_neon and vp8_variance8x8_neon.
|
|
|
|
|vp8_sub_pixel_variance8x8_neon| PROC
|
|
push {r4-r5, lr}
|
|
|
|
ldr r12, _BilinearTaps_coeff_
|
|
ldr r4, [sp, #12] ;load *dst_ptr from stack
|
|
ldr r5, [sp, #16] ;load dst_pixels_per_line from stack
|
|
ldr lr, [sp, #20] ;load *sse from stack
|
|
|
|
cmp r2, #0 ;skip first_pass filter if xoffset=0
|
|
beq skip_firstpass_filter
|
|
|
|
;First pass: output_height lines x output_width columns (9x8)
|
|
add r2, r12, r2, lsl #3 ;calculate filter location
|
|
|
|
vld1.u8 {q1}, [r0], r1 ;load src data
|
|
vld1.u32 {d31}, [r2] ;load first_pass filter
|
|
vld1.u8 {q2}, [r0], r1
|
|
vdup.8 d0, d31[0] ;first_pass filter (d0 d1)
|
|
vld1.u8 {q3}, [r0], r1
|
|
vdup.8 d1, d31[4]
|
|
vld1.u8 {q4}, [r0], r1
|
|
|
|
vmull.u8 q6, d2, d0 ;(src_ptr[0] * Filter[0])
|
|
vmull.u8 q7, d4, d0
|
|
vmull.u8 q8, d6, d0
|
|
vmull.u8 q9, d8, d0
|
|
|
|
vext.8 d3, d2, d3, #1 ;construct src_ptr[-1]
|
|
vext.8 d5, d4, d5, #1
|
|
vext.8 d7, d6, d7, #1
|
|
vext.8 d9, d8, d9, #1
|
|
|
|
vmlal.u8 q6, d3, d1 ;(src_ptr[1] * Filter[1])
|
|
vmlal.u8 q7, d5, d1
|
|
vmlal.u8 q8, d7, d1
|
|
vmlal.u8 q9, d9, d1
|
|
|
|
vld1.u8 {q1}, [r0], r1 ;load src data
|
|
vqrshrn.u16 d22, q6, #7 ;shift/round/saturate to u8
|
|
vld1.u8 {q2}, [r0], r1
|
|
vqrshrn.u16 d23, q7, #7
|
|
vld1.u8 {q3}, [r0], r1
|
|
vqrshrn.u16 d24, q8, #7
|
|
vld1.u8 {q4}, [r0], r1
|
|
vqrshrn.u16 d25, q9, #7
|
|
|
|
;first_pass filtering on the rest 5-line data
|
|
vld1.u8 {q5}, [r0], r1
|
|
|
|
vmull.u8 q6, d2, d0 ;(src_ptr[0] * Filter[0])
|
|
vmull.u8 q7, d4, d0
|
|
vmull.u8 q8, d6, d0
|
|
vmull.u8 q9, d8, d0
|
|
vmull.u8 q10, d10, d0
|
|
|
|
vext.8 d3, d2, d3, #1 ;construct src_ptr[-1]
|
|
vext.8 d5, d4, d5, #1
|
|
vext.8 d7, d6, d7, #1
|
|
vext.8 d9, d8, d9, #1
|
|
vext.8 d11, d10, d11, #1
|
|
|
|
vmlal.u8 q6, d3, d1 ;(src_ptr[1] * Filter[1])
|
|
vmlal.u8 q7, d5, d1
|
|
vmlal.u8 q8, d7, d1
|
|
vmlal.u8 q9, d9, d1
|
|
vmlal.u8 q10, d11, d1
|
|
|
|
vqrshrn.u16 d26, q6, #7 ;shift/round/saturate to u8
|
|
vqrshrn.u16 d27, q7, #7
|
|
vqrshrn.u16 d28, q8, #7
|
|
vqrshrn.u16 d29, q9, #7
|
|
vqrshrn.u16 d30, q10, #7
|
|
|
|
;Second pass: 8x8
|
|
secondpass_filter
|
|
cmp r3, #0 ;skip second_pass filter if yoffset=0
|
|
;skip_secondpass_filter
|
|
beq sub_pixel_variance8x8_neon
|
|
|
|
add r3, r12, r3, lsl #3
|
|
|
|
vld1.u32 {d31}, [r3] ;load second_pass filter
|
|
|
|
vdup.8 d0, d31[0] ;second_pass filter parameters (d0 d1)
|
|
vdup.8 d1, d31[4]
|
|
|
|
vmull.u8 q1, d22, d0 ;(src_ptr[0] * Filter[0])
|
|
vmull.u8 q2, d23, d0
|
|
vmull.u8 q3, d24, d0
|
|
vmull.u8 q4, d25, d0
|
|
vmull.u8 q5, d26, d0
|
|
vmull.u8 q6, d27, d0
|
|
vmull.u8 q7, d28, d0
|
|
vmull.u8 q8, d29, d0
|
|
|
|
vmlal.u8 q1, d23, d1 ;(src_ptr[pixel_step] * Filter[1])
|
|
vmlal.u8 q2, d24, d1
|
|
vmlal.u8 q3, d25, d1
|
|
vmlal.u8 q4, d26, d1
|
|
vmlal.u8 q5, d27, d1
|
|
vmlal.u8 q6, d28, d1
|
|
vmlal.u8 q7, d29, d1
|
|
vmlal.u8 q8, d30, d1
|
|
|
|
vqrshrn.u16 d22, q1, #7 ;shift/round/saturate to u8
|
|
vqrshrn.u16 d23, q2, #7
|
|
vqrshrn.u16 d24, q3, #7
|
|
vqrshrn.u16 d25, q4, #7
|
|
vqrshrn.u16 d26, q5, #7
|
|
vqrshrn.u16 d27, q6, #7
|
|
vqrshrn.u16 d28, q7, #7
|
|
vqrshrn.u16 d29, q8, #7
|
|
|
|
b sub_pixel_variance8x8_neon
|
|
|
|
;--------------------
|
|
skip_firstpass_filter
|
|
vld1.u8 {d22}, [r0], r1 ;load src data
|
|
vld1.u8 {d23}, [r0], r1
|
|
vld1.u8 {d24}, [r0], r1
|
|
vld1.u8 {d25}, [r0], r1
|
|
vld1.u8 {d26}, [r0], r1
|
|
vld1.u8 {d27}, [r0], r1
|
|
vld1.u8 {d28}, [r0], r1
|
|
vld1.u8 {d29}, [r0], r1
|
|
vld1.u8 {d30}, [r0], r1
|
|
|
|
b secondpass_filter
|
|
|
|
;----------------------
|
|
;vp8_variance8x8_neon
|
|
sub_pixel_variance8x8_neon
|
|
vmov.i8 q8, #0 ;q8 - sum
|
|
vmov.i8 q9, #0 ;q9, q10 - sse
|
|
vmov.i8 q10, #0
|
|
|
|
mov r12, #2
|
|
|
|
sub_pixel_variance8x8_neon_loop
|
|
vld1.8 {d0}, [r4], r5 ;load dst data
|
|
subs r12, r12, #1
|
|
vld1.8 {d1}, [r4], r5
|
|
vld1.8 {d2}, [r4], r5
|
|
vsubl.u8 q4, d22, d0 ;calculate diff
|
|
vld1.8 {d3}, [r4], r5
|
|
|
|
vsubl.u8 q5, d23, d1
|
|
vsubl.u8 q6, d24, d2
|
|
|
|
vpadal.s16 q8, q4 ;sum
|
|
vmlal.s16 q9, d8, d8 ;sse
|
|
vmlal.s16 q10, d9, d9
|
|
|
|
vsubl.u8 q7, d25, d3
|
|
|
|
vpadal.s16 q8, q5
|
|
vmlal.s16 q9, d10, d10
|
|
vmlal.s16 q10, d11, d11
|
|
|
|
vmov q11, q13
|
|
|
|
vpadal.s16 q8, q6
|
|
vmlal.s16 q9, d12, d12
|
|
vmlal.s16 q10, d13, d13
|
|
|
|
vmov q12, q14
|
|
|
|
vpadal.s16 q8, q7
|
|
vmlal.s16 q9, d14, d14
|
|
vmlal.s16 q10, d15, d15
|
|
|
|
bne sub_pixel_variance8x8_neon_loop
|
|
|
|
vadd.u32 q10, q9, q10 ;accumulate sse
|
|
vpaddl.s32 q0, q8 ;accumulate sum
|
|
|
|
vpaddl.u32 q1, q10
|
|
vadd.s64 d0, d0, d1
|
|
vadd.u64 d1, d2, d3
|
|
|
|
vmull.s32 q5, d0, d0
|
|
vst1.32 {d1[0]}, [lr] ;store sse
|
|
vshr.s32 d10, d10, #6
|
|
vsub.s32 d0, d1, d10
|
|
|
|
vmov.32 r0, d0[0] ;return
|
|
pop {r4-r5, pc}
|
|
|
|
ENDP
|
|
|
|
;-----------------
|
|
AREA bilinear_taps_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 ...
|
|
_BilinearTaps_coeff_
|
|
DCD bilinear_taps_coeff
|
|
bilinear_taps_coeff
|
|
DCD 128, 0, 112, 16, 96, 32, 80, 48, 64, 64, 48, 80, 32, 96, 16, 112
|
|
|
|
END
|