ref: e71a01064626ae4549019fee73a4518aff75ef6c
dir: /vpx_scale/arm/neon/vp8_vpxyv12_extendframeborders_neon.asm/
;
; Copyright (c) 2010 The WebM 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_yv12_extend_frame_borders_neon|
ARM
REQUIRE8
PRESERVE8
INCLUDE asm_com_offsets.asm
AREA ||.text||, CODE, READONLY, ALIGN=2
;void vp8_yv12_extend_frame_borders_neon (YV12_BUFFER_CONFIG *ybf);
;Note: this is VP8 function, which has border=32 and 16. Internal y_width and y_height
; are always multiples of 16.
|vp8_yv12_extend_frame_borders_neon| PROC
push {r4 - r10, lr}
vpush {d8 - d15}
;Not need to load y_width, since: y_width = y_stride - 2*border
ldr r3, [r0, #yv12_buffer_config_border]
ldr r1, [r0, #yv12_buffer_config_y_buffer] ;srcptr1
ldr r4, [r0, #yv12_buffer_config_y_height]
ldr lr, [r0, #yv12_buffer_config_y_stride]
cmp r3, #16
beq b16_extend_frame_borders
;=======================
b32_extend_frame_borders
;border = 32
;=======================
;Border copy for Y plane
;copy the left and right most columns out
sub r5, r1, r3 ;destptr1
add r6, r1, lr
sub r6, r6, r3, lsl #1 ;destptr2
sub r2, r6, #1 ;srcptr2
;Do four rows at one time
mov r12, r4, lsr #2
copy_left_right_y
vld1.8 {d0[], d1[]}, [r1], lr
vld1.8 {d4[], d5[]}, [r2], lr
vld1.8 {d8[], d9[]}, [r1], lr
vld1.8 {d12[], d13[]}, [r2], lr
vld1.8 {d16[], d17[]}, [r1], lr
vld1.8 {d20[], d21[]}, [r2], lr
vld1.8 {d24[], d25[]}, [r1], lr
vld1.8 {d28[], d29[]}, [r2], lr
vmov q1, q0
vmov q3, q2
vmov q5, q4
vmov q7, q6
vmov q9, q8
vmov q11, q10
vmov q13, q12
vmov q15, q14
subs r12, r12, #1
vst1.8 {q0, q1}, [r5], lr
vst1.8 {q2, q3}, [r6], lr
vst1.8 {q4, q5}, [r5], lr
vst1.8 {q6, q7}, [r6], lr
vst1.8 {q8, q9}, [r5], lr
vst1.8 {q10, q11}, [r6], lr
vst1.8 {q12, q13}, [r5], lr
vst1.8 {q14, q15}, [r6], lr
bne copy_left_right_y
;Now copy the top and bottom source lines into each line of the respective borders
ldr r7, [r0, #yv12_buffer_config_y_buffer] ;srcptr1
mul r8, r3, lr
mov r12, lr, lsr #7
sub r6, r1, r3 ;destptr2
sub r2, r6, lr ;srcptr2
sub r1, r7, r3 ;srcptr1
sub r5, r1, r8 ;destptr1
copy_top_bottom_y
vld1.8 {q0, q1}, [r1]!
vld1.8 {q8, q9}, [r2]!
vld1.8 {q2, q3}, [r1]!
vld1.8 {q10, q11}, [r2]!
vld1.8 {q4, q5}, [r1]!
vld1.8 {q12, q13}, [r2]!
vld1.8 {q6, q7}, [r1]!
vld1.8 {q14, q15}, [r2]!
mov r7, r3
top_bottom_32
subs r7, r7, #1
vst1.8 {q0, q1}, [r5]!
vst1.8 {q8, q9}, [r6]!
vst1.8 {q2, q3}, [r5]!
vst1.8 {q10, q11}, [r6]!
vst1.8 {q4, q5}, [r5]!
vst1.8 {q12, q13}, [r6]!
vst1.8 {q6, q7}, [r5]!
vst1.8 {q14, q15}, [r6]!
add r5, r5, lr
sub r5, r5, #128
add r6, r6, lr
sub r6, r6, #128
bne top_bottom_32
sub r5, r1, r8
add r6, r2, lr
subs r12, r12, #1
bne copy_top_bottom_y
mov r7, lr, lsr #4 ;check to see if extra copy is needed
ands r7, r7, #0x7
bne extra_top_bottom_y
end_of_border_copy_y
;Border copy for U, V planes
ldr r1, [r0, #yv12_buffer_config_u_buffer] ;srcptr1
mov lr, lr, lsr #1 ;uv_stride
mov r3, r3, lsr #1 ;border
mov r4, r4, lsr #1 ;uv_height
mov r8, r8, lsr #2
mov r10, #2
;copy the left and right most columns out
border_copy_uv
sub r5, r1, r3 ;destptr1
add r6, r1, lr
sub r6, r6, r3, lsl #1 ;destptr2
sub r2, r6, #1 ;srcptr2
mov r7, r1
;Do eight rows at one time
mov r12, r4, lsr #3
copy_left_right_uv
vld1.8 {d0[], d1[]}, [r1], lr
vld1.8 {d2[], d3[]}, [r2], lr
vld1.8 {d4[], d5[]}, [r1], lr
vld1.8 {d6[], d7[]}, [r2], lr
vld1.8 {d8[], d9[]}, [r1], lr
vld1.8 {d10[], d11[]}, [r2], lr
vld1.8 {d12[], d13[]}, [r1], lr
vld1.8 {d14[], d15[]}, [r2], lr
vld1.8 {d16[], d17[]}, [r1], lr
vld1.8 {d18[], d19[]}, [r2], lr
vld1.8 {d20[], d21[]}, [r1], lr
vld1.8 {d22[], d23[]}, [r2], lr
vld1.8 {d24[], d25[]}, [r1], lr
vld1.8 {d26[], d27[]}, [r2], lr
vld1.8 {d28[], d29[]}, [r1], lr
vld1.8 {d30[], d31[]}, [r2], lr
subs r12, r12, #1
vst1.8 {q0}, [r5], lr
vst1.8 {q1}, [r6], lr
vst1.8 {q2}, [r5], lr
vst1.8 {q3}, [r6], lr
vst1.8 {q4}, [r5], lr
vst1.8 {q5}, [r6], lr
vst1.8 {q6}, [r5], lr
vst1.8 {q7}, [r6], lr
vst1.8 {q8}, [r5], lr
vst1.8 {q9}, [r6], lr
vst1.8 {q10}, [r5], lr
vst1.8 {q11}, [r6], lr
vst1.8 {q12}, [r5], lr
vst1.8 {q13}, [r6], lr
vst1.8 {q14}, [r5], lr
vst1.8 {q15}, [r6], lr
bne copy_left_right_uv
;Now copy the top and bottom source lines into each line of the respective borders
mov r12, lr, lsr #6
sub r6, r1, r3 ;destptr2
sub r2, r6, lr ;srcptr2
sub r1, r7, r3 ;srcptr1
sub r5, r1, r8 ;destptr1
copy_top_bottom_uv
vld1.8 {q0, q1}, [r1]!
vld1.8 {q8, q9}, [r2]!
vld1.8 {q2, q3}, [r1]!
vld1.8 {q10, q11}, [r2]!
mov r7, r3
top_bottom_16
subs r7, r7, #1
vst1.8 {q0, q1}, [r5]!
vst1.8 {q8, q9}, [r6]!
vst1.8 {q2, q3}, [r5]!
vst1.8 {q10, q11}, [r6]!
add r5, r5, lr
sub r5, r5, #64
add r6, r6, lr
sub r6, r6, #64
bne top_bottom_16
sub r5, r1, r8
add r6, r2, lr
subs r12, r12, #1
bne copy_top_bottom_uv
mov r7, lr, lsr #3 ;check to see if extra copy is needed
ands r7, r7, #0x7
bne extra_top_bottom_uv
end_of_border_copy_uv
subs r10, r10, #1
ldrne r1, [r0, #yv12_buffer_config_v_buffer] ;srcptr1
bne border_copy_uv
vpop {d8 - d15}
pop {r4 - r10, pc}
;;;;;;;;;;;;;;;;;;;;;;
;extra copy part for Y
extra_top_bottom_y
vld1.8 {q0}, [r1]!
vld1.8 {q2}, [r2]!
mov r9, r3, lsr #3
extra_top_bottom_32
subs r9, r9, #1
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
bne extra_top_bottom_32
sub r5, r1, r8
add r6, r2, lr
subs r7, r7, #1
bne extra_top_bottom_y
b end_of_border_copy_y
;extra copy part for UV
extra_top_bottom_uv
vld1.8 {d0}, [r1]!
vld1.8 {d8}, [r2]!
mov r9, r3, lsr #3
extra_top_bottom_16
subs r9, r9, #1
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
bne extra_top_bottom_16
sub r5, r1, r8
add r6, r2, lr
subs r7, r7, #1
bne extra_top_bottom_uv
b end_of_border_copy_uv
;=======================
b16_extend_frame_borders
;border = 16
;=======================
;Border copy for Y plane
;copy the left and right most columns out
sub r5, r1, r3 ;destptr1
add r6, r1, lr
sub r6, r6, r3, lsl #1 ;destptr2
sub r2, r6, #1 ;srcptr2
;Do four rows at one time
mov r12, r4, lsr #2
copy_left_right_y_b16
vld1.8 {d0[], d1[]}, [r1], lr
vld1.8 {d4[], d5[]}, [r2], lr
vld1.8 {d8[], d9[]}, [r1], lr
vld1.8 {d12[], d13[]}, [r2], lr
vld1.8 {d16[], d17[]}, [r1], lr
vld1.8 {d20[], d21[]}, [r2], lr
vld1.8 {d24[], d25[]}, [r1], lr
vld1.8 {d28[], d29[]}, [r2], lr
subs r12, r12, #1
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q4}, [r5], lr
vst1.8 {q6}, [r6], lr
vst1.8 {q8}, [r5], lr
vst1.8 {q10}, [r6], lr
vst1.8 {q12}, [r5], lr
vst1.8 {q14}, [r6], lr
bne copy_left_right_y_b16
;Now copy the top and bottom source lines into each line of the respective borders
ldr r7, [r0, #yv12_buffer_config_y_buffer] ;srcptr1
mul r8, r3, lr
mov r12, lr, lsr #7
sub r6, r1, r3 ;destptr2
sub r2, r6, lr ;srcptr2
sub r1, r7, r3 ;srcptr1
sub r5, r1, r8 ;destptr1
copy_top_bottom_y_b16
vld1.8 {q0, q1}, [r1]!
vld1.8 {q8, q9}, [r2]!
vld1.8 {q2, q3}, [r1]!
vld1.8 {q10, q11}, [r2]!
vld1.8 {q4, q5}, [r1]!
vld1.8 {q12, q13}, [r2]!
vld1.8 {q6, q7}, [r1]!
vld1.8 {q14, q15}, [r2]!
mov r7, r3
top_bottom_16_b16
subs r7, r7, #1
vst1.8 {q0, q1}, [r5]!
vst1.8 {q8, q9}, [r6]!
vst1.8 {q2, q3}, [r5]!
vst1.8 {q10, q11}, [r6]!
vst1.8 {q4, q5}, [r5]!
vst1.8 {q12, q13}, [r6]!
vst1.8 {q6, q7}, [r5]!
vst1.8 {q14, q15}, [r6]!
add r5, r5, lr
sub r5, r5, #128
add r6, r6, lr
sub r6, r6, #128
bne top_bottom_16_b16
sub r5, r1, r8
add r6, r2, lr
subs r12, r12, #1
bne copy_top_bottom_y_b16
mov r7, lr, lsr #4 ;check to see if extra copy is needed
ands r7, r7, #0x7
bne extra_top_bottom_y_b16
end_of_border_copy_y_b16
;Border copy for U, V planes
ldr r1, [r0, #yv12_buffer_config_u_buffer] ;srcptr1
mov lr, lr, lsr #1 ;uv_stride
mov r3, r3, lsr #1 ;border
mov r4, r4, lsr #1 ;uv_height
mov r8, r8, lsr #2
mov r10, #2
;copy the left and right most columns out
border_copy_uv_b16
sub r5, r1, r3 ;destptr1
add r6, r1, lr
sub r6, r6, r3, lsl #1 ;destptr2
sub r2, r6, #1 ;srcptr2
mov r7, r1
;Do eight rows at one time
mov r12, r4, lsr #3
copy_left_right_uv_b16
vld1.8 {d0[]}, [r1], lr
vld1.8 {d2[]}, [r2], lr
vld1.8 {d4[]}, [r1], lr
vld1.8 {d6[]}, [r2], lr
vld1.8 {d8[]}, [r1], lr
vld1.8 {d10[]}, [r2], lr
vld1.8 {d12[]}, [r1], lr
vld1.8 {d14[]}, [r2], lr
vld1.8 {d16[]}, [r1], lr
vld1.8 {d18[]}, [r2], lr
vld1.8 {d20[]}, [r1], lr
vld1.8 {d22[]}, [r2], lr
vld1.8 {d24[]}, [r1], lr
vld1.8 {d26[]}, [r2], lr
vld1.8 {d28[]}, [r1], lr
vld1.8 {d30[]}, [r2], lr
subs r12, r12, #1
vst1.8 {d0}, [r5], lr
vst1.8 {d2}, [r6], lr
vst1.8 {d4}, [r5], lr
vst1.8 {d6}, [r6], lr
vst1.8 {d8}, [r5], lr
vst1.8 {d10}, [r6], lr
vst1.8 {d12}, [r5], lr
vst1.8 {d14}, [r6], lr
vst1.8 {d16}, [r5], lr
vst1.8 {d18}, [r6], lr
vst1.8 {d20}, [r5], lr
vst1.8 {d22}, [r6], lr
vst1.8 {d24}, [r5], lr
vst1.8 {d26}, [r6], lr
vst1.8 {d28}, [r5], lr
vst1.8 {d30}, [r6], lr
bne copy_left_right_uv_b16
;Now copy the top and bottom source lines into each line of the respective borders
mov r12, lr, lsr #6
sub r6, r1, r3 ;destptr2
sub r2, r6, lr ;srcptr2
sub r1, r7, r3 ;srcptr1
sub r5, r1, r8 ;destptr1
copy_top_bottom_uv_b16
vld1.8 {q0, q1}, [r1]!
vld1.8 {q8, q9}, [r2]!
vld1.8 {q2, q3}, [r1]!
vld1.8 {q10, q11}, [r2]!
mov r7, r3
top_bottom_8_b16
subs r7, r7, #1
vst1.8 {q0, q1}, [r5]!
vst1.8 {q8, q9}, [r6]!
vst1.8 {q2, q3}, [r5]!
vst1.8 {q10, q11}, [r6]!
add r5, r5, lr
sub r5, r5, #64
add r6, r6, lr
sub r6, r6, #64
bne top_bottom_8_b16
sub r5, r1, r8
add r6, r2, lr
subs r12, r12, #1
bne copy_top_bottom_uv_b16
mov r7, lr, lsr #3 ;check to see if extra copy is needed
ands r7, r7, #0x7
bne extra_top_bottom_uv_b16
end_of_border_copy_uv_b16
subs r10, r10, #1
ldrne r1, [r0, #yv12_buffer_config_v_buffer] ;srcptr1
bne border_copy_uv_b16
vpop {d8-d15}
pop {r4 - r10, pc}
;;;;;;;;;;;;;;;;;;;;;;
;extra copy part for Y
extra_top_bottom_y_b16
vld1.8 {q0}, [r1]!
vld1.8 {q2}, [r2]!
mov r9, r3, lsr #3
extra_top_bottom_16_b16
subs r9, r9, #1
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
vst1.8 {q0}, [r5], lr
vst1.8 {q2}, [r6], lr
bne extra_top_bottom_16_b16
sub r5, r1, r8
add r6, r2, lr
subs r7, r7, #1
bne extra_top_bottom_y_b16
b end_of_border_copy_y_b16
;extra copy part for UV
extra_top_bottom_uv_b16
vld1.8 {d0}, [r1]!
vld1.8 {d8}, [r2]!
mov r9, r3, lsr #3
extra_top_bottom_8_b16
subs r9, r9, #1
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
vst1.8 {d0}, [r5], lr
vst1.8 {d8}, [r6], lr
bne extra_top_bottom_8_b16
sub r5, r1, r8
add r6, r2, lr
subs r7, r7, #1
bne extra_top_bottom_uv_b16
b end_of_border_copy_uv_b16
ENDP
END