diff options
author | Clément Bœsch <clement@stupeflix.com> | 2016-04-01 18:27:29 +0300 |
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committer | Clément Bœsch <clement@stupeflix.com> | 2016-04-11 17:27:19 +0300 |
commit | c921f4f687971a62f9eb16eadfad99de53c92064 (patch) | |
tree | de00ac849ef7f4bc473b836d8bab0eb337d1b869 /libswscale | |
parent | 0dfbca73bbb3319af49554f7f844e1d7b8d2192c (diff) |
sws/aarch64: add ff_yuv2planeX_8_neon
Diffstat (limited to 'libswscale')
-rw-r--r-- | libswscale/aarch64/Makefile | 1 | ||||
-rw-r--r-- | libswscale/aarch64/output.S | 66 | ||||
-rw-r--r-- | libswscale/aarch64/swscale.c | 7 | ||||
-rw-r--r-- | libswscale/utils.c | 3 |
4 files changed, 76 insertions, 1 deletions
diff --git a/libswscale/aarch64/Makefile b/libswscale/aarch64/Makefile index 51bff086f8..64a3fe208d 100644 --- a/libswscale/aarch64/Makefile +++ b/libswscale/aarch64/Makefile @@ -2,4 +2,5 @@ OBJS += aarch64/swscale.o \ aarch64/swscale_unscaled.o \ NEON-OBJS += aarch64/hscale.o \ + aarch64/output.o \ aarch64/yuv2rgb_neon.o \ diff --git a/libswscale/aarch64/output.S b/libswscale/aarch64/output.S new file mode 100644 index 0000000000..90d3b57b10 --- /dev/null +++ b/libswscale/aarch64/output.S @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2016 Clément Bœsch <clement stupeflix.com> + * + * 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_yuv2planeX_8_neon, export=1 + ld1 {v0.8B}, [x5] // load 8x8-bit dither + cbz w6, 1f // check if offsetting present + ext v0.8B, v0.8B, v0.8B, #3 // honor offsetting which can be 0 or 3 only +1: uxtl v0.8H, v0.8B // extend dither to 16-bit + ushll v1.4S, v0.4H, #12 // extend dither to 32-bit with left shift by 12 (part 1) + ushll2 v2.4S, v0.8H, #12 // extend dither to 32-bit with left shift by 12 (part 2) + mov x7, #0 // i = 0 +2: mov v3.16B, v1.16B // initialize accumulator part 1 with dithering value + mov v4.16B, v2.16B // initialize accumulator part 2 with dithering value + mov w8, w1 // tmpfilterSize = filterSize + mov x9, x2 // srcp = src + mov x10, x0 // filterp = filter +3: ldp x11, x12, [x9], #16 // get 2 pointers: src[j] and src[j+1] + add x11, x11, x7, lsl #1 // &src[j ][i] + add x12, x12, x7, lsl #1 // &src[j+1][i] + ld1 {v5.8H}, [x11] // read 8x16-bit @ src[j ][i + {0..7}]: A,B,C,D,E,F,G,H + ld1 {v6.8H}, [x12] // read 8x16-bit @ src[j+1][i + {0..7}]: I,J,K,L,M,N,O,P + ldr w11, [x10], #4 // read 2x16-bit coeffs (X, Y) at (filter[j], filter[j+1]) + zip1 v16.8H, v5.8H, v6.8H // A,I,B,J,C,K,D,L + zip2 v17.8H, v5.8H, v6.8H // E,M,F,N,F,O,H,P + dup v7.4S, w11 // X,Y,X,Y,X,Y,X,Y + smull v18.4S, v16.4H, v7.4H // A.X I.Y B.X J.Y + smull v20.4S, v17.4H, v7.4H // E.X M.Y F.X N.Y + smull2 v19.4S, v16.8H, v7.8H // C.X K.Y D.X L.Y + smull2 v21.4S, v17.8H, v7.8H // G.X O.Y H.X P.Y + addp v16.4S, v18.4S, v19.4S // A.X+I.Y B.X+J.Y C.X+K.Y D.X+L.Y + addp v17.4S, v20.4S, v21.4S // E.X+M.Y F.X+N.Y F.X+O.Y H.X+P.Y + add v3.4S, v3.4S, v16.4S // update val accumulator for part 1 + add v4.4S, v4.4S, v17.4S // update val accumulator for part 2 + subs w8, w8, #2 // tmpfilterSize -= 2 + b.gt 3b // loop until filterSize consumed + sshr v3.4S, v3.4S, #19 // val>>19 (part 1) + sshr v4.4S, v4.4S, #19 // val>>19 (part 2) + sqxtun v3.4H, v3.4S // clip16(val>>19) (part 1) + sqxtun v4.4H, v4.4S // clip16(val>>19) (part 2) + mov v3.D[1], v4.D[0] // merge part 1 and part 2 + uqxtn v3.8B, v3.8H // clip8(val>>19) + st1 {v3.1D}, [x3], #8 // write to destination + add x7, x7, #8 // i += 8 + subs w4, w4, #8 // dstW -= 8 + b.gt 2b // loop until width consumed + ret +endfunc diff --git a/libswscale/aarch64/swscale.c b/libswscale/aarch64/swscale.c index 6b9b046816..54a3beabe8 100644 --- a/libswscale/aarch64/swscale.c +++ b/libswscale/aarch64/swscale.c @@ -25,6 +25,10 @@ void ff_hscale_8_to_15_neon(SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize); +void ff_yuv2planeX_8_neon(const int16_t *filter, int filterSize, + const int16_t **src, uint8_t *dest, int dstW, + const uint8_t *dither, int offset); + av_cold void ff_sws_init_swscale_aarch64(SwsContext *c) { int cpu_flags = av_get_cpu_flags(); @@ -33,5 +37,8 @@ av_cold void ff_sws_init_swscale_aarch64(SwsContext *c) if (c->srcBpc == 8 && c->dstBpc <= 14) { c->hyScale = c->hcScale = ff_hscale_8_to_15_neon; } + if (c->dstBpc == 8) { + c->yuv2planeX = ff_yuv2planeX_8_neon; + } } } diff --git a/libswscale/utils.c b/libswscale/utils.c index b81661f6ea..63a8226332 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -1655,7 +1655,8 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter, /* precalculate vertical scaler filter coefficients */ { const int filterAlign = X86_MMX(cpu_flags) ? 2 : - PPC_ALTIVEC(cpu_flags) ? 8 : 1; + PPC_ALTIVEC(cpu_flags) ? 8 : + have_neon(cpu_flags) ? 2 : 1; if ((ret = initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc, srcH, dstH, filterAlign, (1 << 12), |