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swscale/aarch64: add nv24/nv42 to yuv420p unscaled converter

Browse Source 
A55               A76
nv24_yuv420p_128_c:       4956.1            1267.0
nv24_yuv420p_128_neon:    3109.1 ( 1.59x)    640.0 ( 1.98x)
nv24_yuv420p_1920_c:     35728.4           11736.2
nv24_yuv420p_1920_neon:   8011.1 ( 4.46x)   2436.0 ( 4.82x)
nv42_yuv420p_128_c:       4956.4            1270.5
nv42_yuv420p_128_neon:    3074.6 ( 1.61x)    639.5 ( 1.99x)
nv42_yuv420p_1920_c:     35685.9           11732.5
nv42_yuv420p_1920_neon:   7995.1 ( 4.46x)   2437.2 ( 4.81x)
This commit is contained in:
Ramiro Polla 2024-08-07 18:53:12 +02:00
parent 88a563ad18
commit 52887683e9
3 changed files with 101 additions and 0 deletions
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1
libswscale/aarch64/Makefile
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@ -7,4 +7,5 @@ NEON-OBJS += aarch64/hscale.o \
aarch64/output.o \
aarch64/range_convert_neon.o \
aarch64/rgb2rgb_neon.o \
aarch64/swscale_unscaled_neon.o \
aarch64/yuv2rgb_neon.o \

30
libswscale/aarch64/swscale_unscaled.c
View File

@ -139,6 +139,31 @@ static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[],
dst[2] + srcSliceY * dstStride[2], dstStride[2]); \
} \
void ff_nv24_to_yuv420p_chroma_neon(uint8_t *dst1, int dstStride1,
uint8_t *dst2, int dstStride2,
const uint8_t *src, int srcStride,
int w, int h);
static int nv24_to_yuv420p_neon_wrapper(SwsContext *c, const uint8_t *src[],
int srcStride[], int srcSliceY, int srcSliceH,
uint8_t *dst[], int dstStride[])
{
uint8_t *dst1 = dst[1] + dstStride[1] * srcSliceY / 2;
uint8_t *dst2 = dst[2] + dstStride[2] * srcSliceY / 2;
ff_copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
dst[0], dstStride[0]);
if (c->srcFormat == AV_PIX_FMT_NV24)
ff_nv24_to_yuv420p_chroma_neon(dst1, dstStride[1], dst2, dstStride[2],
src[1], srcStride[1], c->srcW / 2, srcSliceH);
else
ff_nv24_to_yuv420p_chroma_neon(dst2, dstStride[2], dst1, dstStride[1],
src[1], srcStride[1], c->srcW / 2, srcSliceH);
return srcSliceH;
}
#define DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nvx) \
DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, argb) \
DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, rgba) \
@ -177,6 +202,11 @@ static void get_unscaled_swscale_neon(SwsContext *c) {
SET_FF_NVX_TO_ALL_RGBX_FUNC(nv21, NV21, accurate_rnd);
SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv420p, YUV420P, accurate_rnd);
SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv422p, YUV422P, accurate_rnd);
if (c->dstFormat == AV_PIX_FMT_YUV420P &&
(c->srcFormat == AV_PIX_FMT_NV24 || c->srcFormat == AV_PIX_FMT_NV42) &&
!(c->srcH & 1) && !(c->srcW & 15) && !accurate_rnd)
c->convert_unscaled = nv24_to_yuv420p_neon_wrapper;
}
void ff_get_unscaled_swscale_aarch64(SwsContext *c)

70
libswscale/aarch64/swscale_unscaled_neon.S Normal file
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@ -0,0 +1,70 @@
/*
* Copyright (c) 2024 Ramiro Polla
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/aarch64/asm.S"
function ff_nv24_to_yuv420p_chroma_neon, export=1
// x0 uint8_t *dst1
// x1 int dstStride1
// x2 uint8_t *dst2
// x3 int dstStride2
// x4 const uint8_t *src
// x5 int srcStride
// w6 int w
// w7 int h
add x9, x4, w5, sxtw // x9 = src + srcStride
lsl w5, w5, #1 // srcStride *= 2
sub w5, w5, w6, lsl #2 // srcPadding = (2 * srcStride) - (4 * w)
sub w1, w1, w6 // dstPadding1 = dstStride1 - w
sub w3, w3, w6 // dstPadding2 = dstStride2 - w
1:
mov w10, w6 // w10 = w
2:
ld2 { v0.16b, v1.16b }, [x4], #32 // v0 = U1, v1 = V1
ld2 { v2.16b, v3.16b }, [x9], #32 // v2 = U2, v3 = V2
uaddlp v0.8h, v0.16b // pairwise add U1 into v0
uaddlp v1.8h, v1.16b // pairwise add V1 into v1
uadalp v0.8h, v2.16b // pairwise add U2, accumulate into v0
uadalp v1.8h, v3.16b // pairwise add V2, accumulate into v1
shrn v0.8b, v0.8h, #2 // divide by 4
shrn v1.8b, v1.8h, #2 // divide by 4
st1 { v0.8b }, [x0], #8 // store U into dst1
st1 { v1.8b }, [x2], #8 // store V into dst2
subs w10, w10, #8
b.gt 2b
// next row
add x4, x4, w5, sxtw // src1 += srcPadding
add x9, x9, w5, sxtw // src2 += srcPadding
add x0, x0, w1, sxtw // dst1 += dstPadding1
add x2, x2, w3, sxtw // dst2 += dstPadding2
subs w7, w7, #2
b.gt 1b
ret
endfunc