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swscale/aarch64/rgb2rgb_neon: Implemented {yuyv, uyvy}toyuv{420, 422}

Browse Source 
A78:
uyvytoyuv420_neon:                                    6112.5 ( 6.96x)
uyvytoyuv422_neon:                                    6696.0 ( 6.32x)
yuyvtoyuv420_neon:                                    6113.0 ( 6.95x)
yuyvtoyuv422_neon:                                    6695.2 ( 6.31x)

A72:
uyvytoyuv420_neon:                                    9512.1 ( 6.09x)
uyvytoyuv422_neon:                                    9766.8 ( 6.32x)
yuyvtoyuv420_neon:                                    9639.1 ( 6.00x)
yuyvtoyuv422_neon:                                    9779.0 ( 6.03x)

A53:
uyvytoyuv420_neon:                                   12720.1 ( 9.10x)
uyvytoyuv422_neon:                                   14282.9 ( 6.71x)
yuyvtoyuv420_neon:                                   12637.4 ( 9.15x)
yuyvtoyuv422_neon:                                   14127.6 ( 6.77x)

Signed-off-by: Martin Storsjö <martin@martin.st>
master
Krzysztof Pyrkosz 2 weeks ago committed by Martin Storsjö
parent 64107e22f5
commit b92577405b
2 changed files with 278 additions and 0 deletions
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  1. 16
      libswscale/aarch64/rgb2rgb.c
  2. 262
      libswscale/aarch64/rgb2rgb_neon.S

16
libswscale/aarch64/rgb2rgb.c
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@ -67,6 +67,18 @@ void ff_shuffle_bytes_2013_neon(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_2130_neon(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_1203_neon(const uint8_t *src, uint8_t *dst, int src_size);
void ff_uyvytoyuv422_neon(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride);
void ff_uyvytoyuv420_neon(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride);
void ff_yuyvtoyuv420_neon(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride);
void ff_yuyvtoyuv422_neon(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
const uint8_t *src, int width, int height,
int lumStride, int chromStride, int srcStride);
av_cold void rgb2rgb_init_aarch64(void)
{
int cpu_flags = av_get_cpu_flags();
@ -84,5 +96,9 @@ av_cold void rgb2rgb_init_aarch64(void)
shuffle_bytes_2013 = ff_shuffle_bytes_2013_neon;
shuffle_bytes_2130 = ff_shuffle_bytes_2130_neon;
shuffle_bytes_1203 = ff_shuffle_bytes_1203_neon;
uyvytoyuv422 = ff_uyvytoyuv422_neon;
uyvytoyuv420 = ff_uyvytoyuv420_neon;
yuyvtoyuv422 = ff_yuyvtoyuv422_neon;
yuyvtoyuv420 = ff_yuyvtoyuv420_neon;
}
}

262
libswscale/aarch64/rgb2rgb_neon.S
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@ -425,3 +425,265 @@ neon_shuf 2013
neon_shuf 1203
neon_shuf 2130
neon_shuf 3210
/*
v0-v7 - two consecutive lines
x0 - upper Y destination
x1 - U destination
x2 - V destination
x3 - upper src line
w5 - width/iteration counter - count of line pairs for yuv420, of single lines for 422
x6 - lum padding
x7 - chrom padding
x8 - src padding
w9 - number of bytes remaining in the tail
x10 - lower Y destination
w12 - tmp
x13 - lower src line
w14 - tmp
w17 - set to 1 if last line has to be handled separately (odd height)
*/
// one fast path iteration processes 16 uyvy tuples
// is_line_tail is set to 1 when final 16 tuples are being processed
// skip_storing_chroma is set to 1 when final line is processed and the height is odd
.macro fastpath_iteration src_fmt, dst_fmt, is_line_tail, skip_storing_chroma
ld4 {v0.16b - v3.16b}, [x3], #64
.if ! \is_line_tail
subs w14, w14, #32
.endif
.if ! \skip_storing_chroma
.ifc \dst_fmt, yuv420
ld4 {v4.16b - v7.16b}, [x13], #64
.endif
.ifc \dst_fmt, yuv420 // store UV
.ifc \src_fmt, uyvy
uhadd v0.16b, v4.16b, v0.16b // halving sum of U
uhadd v2.16b, v6.16b, v2.16b // halving sum of V
.else
uhadd v1.16b, v5.16b, v1.16b // halving sum of U
uhadd v3.16b, v7.16b, v3.16b // halving sum of V
.endif
.endif
.ifc \src_fmt, uyvy
st1 {v2.16b}, [x2], #16
st1 {v0.16b}, [x1], #16
.else
st1 {v3.16b}, [x2], #16
st1 {v1.16b}, [x1], #16
.endif
.ifc \dst_fmt, yuv420 // store_y
.ifc \src_fmt, uyvy
mov v6.16b, v5.16b
st2 {v6.16b,v7.16b}, [x10], #32
.else
mov v5.16b, v4.16b
st2 {v5.16b,v6.16b}, [x10], #32
.endif
.endif
.endif // ! \skip_storing_chroma
.ifc \src_fmt, uyvy
mov v2.16b, v1.16b
st2 {v2.16b,v3.16b}, [x0], #32
.else
mov v1.16b, v0.16b
st2 {v1.16b,v2.16b}, [x0], #32
.endif
.endm
// shift pointers back to width - 32 to process the tail of the line
// if the height is odd, processing the final line is simplified
.macro fastpath_shift_back_pointers src_fmt, dst_fmt, is_final_odd_line
add x3, x3, w9, sxtw #1
sub x3, x3, #64
.if ! \is_final_odd_line
.ifc \dst_fmt, yuv420
add x13, x13, w9, sxtw #1
sub x13, x13, #64
add x10, x10, w9, sxtw
sub x10, x10, #32
.endif
.endif
add x0, x0, w9, sxtw
sub x0, x0, #32
.if ! \is_final_odd_line
asr w14, w9, #1
add x1, x1, w14, sxtw
sub x1, x1, #16
add x2, x2, w14, sxtw
sub x2, x2, #16
.endif
.endm
.macro slowpath_iteration src_fmt, dst_fmt, skip_storing_chroma
.ifc \dst_fmt, yuv422
.ifc \src_fmt, uyvy
ldrb w12, [x3], #1
ldrb w14, [x3], #1
strb w12, [x1], #1
strb w14, [x0], #1
ldrb w12, [x3], #1
ldrb w14, [x3], #1
strb w12, [x2], #1
strb w14, [x0], #1
.else
ldrb w12, [x3], #1
ldrb w14, [x3], #1
strb w12, [x0], #1
strb w14, [x1], #1
ldrb w12, [x3], #1
ldrb w14, [x3], #1
strb w12, [x0], #1
strb w14, [x2], #1
.endif
.endif
.ifc \dst_fmt, yuv420
.ifc \src_fmt, uyvy
.if \skip_storing_chroma
ldrb w12, [x3], #2
ldrb w14, [x3], #2
strb w12, [x0], #1
strb w14, [x0], #1
.else
ldrb w12, [x3], #1
ldrb w14, [x13], #1
add w12, w12, w14
lsr w12, w12, #1
strb w12, [x1], #1
ldrb w14, [x3], #1
ldrb w12, [x13], #1
strb w14, [x0], #1
strb w12, [x10], #1
ldrb w14, [x13], #1
ldrb w12, [x3], #1
add w12, w12, w14
lsr w12, w12, #1
strb w12, [x2], #1
ldrb w14, [x3], #1
ldrb w12, [x13], #1
strb w14, [x0], #1
strb w12, [x10], #1
.endif
.else
.if \skip_storing_chroma
ldrb w12, [x3], #2
ldrb w14, [x3], #2
strb w12, [x0], #1
strb w14, [x0], #1
.else
ldrb w12, [x3], #1
ldrb w14, [x13], #1
strb w12, [x0], #1
strb w14, [x10], #1
ldrb w12, [x3], #1
ldrb w14, [x13], #1
add w12, w12, w14
lsr w12, w12, #1
strb w12, [x1], #1
ldrb w14, [x3], #1
ldrb w12, [x13], #1
strb w14, [x0], #1
strb w12, [x10], #1
ldrb w14, [x13], #1
ldrb w12, [x3], #1
add w12, w12, w14
lsr w12, w12, #1
strb w12, [x2], #1
.endif
.endif
.endif
.endm
.macro move_pointers_to_next_line src_fmt, dst_fmt, is_final_odd_line
add x3, x3, x8
add x0, x0, x6
.ifc \dst_fmt, yuv420
add x13, x13, x8
add x10, x10, x6
.endif
add x1, x1, x7
add x2, x2, x7
.endm
.macro interleaved_yuv_to_planar src_fmt, dst_fmt
function ff_\src_fmt\()to\dst_fmt\()_neon, export=1
sxtw x6, w6
sxtw x7, w7
ldrsw x8, [sp]
ands w11, w4, #~31 // choose between fast and slow path
.ifc \dst_fmt, yuv420
add x10, x0, x6
add x13, x3, x8
add x8, x8, x8
add x6, x6, x6
and w17, w5, #1
asr w5, w5, #1
.endif
asr w9, w4, #1
sub x8, x8, w4, sxtw #1 // src offset
sub x6, x6, w4, sxtw // lum offset
sub x7, x7, x9 // chr offset
b.eq 6f
1: // fast path - the width is at least 32
and w14, w4, #~31 // w14 is the main loop counter
and w9, w4, #31 // w9 holds the remaining width, 0 to 31
2:
fastpath_iteration \src_fmt, \dst_fmt, 0, 0
b.ne 2b
fastpath_shift_back_pointers \src_fmt, \dst_fmt, 0
fastpath_iteration \src_fmt, \dst_fmt, 0, 0
subs w5, w5, #1
move_pointers_to_next_line \src_fmt, \dst_fmt
b.ne 1b
.ifc \dst_fmt, yuv420 // handle the last line in case the height is odd
cbz w17, 3f
and w14, w4, #~31
4:
fastpath_iteration \src_fmt, \dst_fmt, 0, 1
b.ne 4b
fastpath_shift_back_pointers \src_fmt, \dst_fmt, 1
fastpath_iteration \src_fmt, \dst_fmt, 1, 1
3:
.endif
ret
6: // slow path - width is at most 31
and w9, w4, #31
7:
subs w9, w9, #2
slowpath_iteration \src_fmt, \dst_fmt, 0
b.ne 7b
subs w5, w5, #1
move_pointers_to_next_line \src_fmt, \dst_fmt
b.ne 6b
.ifc \dst_fmt, yuv420
cbz w17, 8f
and w9, w4, #31
.ifc \src_fmt, uyvy
add x3, x3, #1
.endif
5:
subs w9, w9, #2
slowpath_iteration \src_fmt, \dst_fmt, 1
b.ne 5b
8:
.endif
ret
endfunc
.endm
interleaved_yuv_to_planar uyvy, yuv422
interleaved_yuv_to_planar uyvy, yuv420
interleaved_yuv_to_planar yuyv, yuv422
interleaved_yuv_to_planar yuyv, yuv420

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