83e4b068d9
This patch supplies handwritten NEON code for AAC. The benchmarks below were collected by invoking these two commands on each of my boards, A78, A72 and Thinkpad x13s: 1) ./tests/checkasm/checkasm --test=aacencdsp --bench --runs=12 2) ./ffmpeg -y -t 10:00 -f lavfi -i sine /tmp/foo.aac (the first line is speed without the patch, second, with) - A78 abs_pow34_c: 4161.5 ( 1.00x) abs_pow34_neon: 3586.2 ( 1.16x) quant_bands_signed_c: 5548.0 ( 1.00x) quant_bands_signed_neon: 1126.8 ( 4.92x) quant_bands_unsigned_c: 3979.2 ( 1.00x) quant_bands_unsigned_neon: 800.2 ( 4.97x) size= 5251KiB time=00:10:00.00 bitrate= 71.7kbits/s speed=71.6x size= 5251KiB time=00:10:00.00 bitrate= 71.7kbits/s speed=82.3x - A72 abs_pow34_c: 15362.2 ( 1.00x) abs_pow34_neon: 15382.5 ( 1.00x) quant_bands_signed_c: 9926.5 ( 1.00x) quant_bands_signed_neon: 2467.8 ( 4.02x) quant_bands_unsigned_c: 5469.8 ( 1.00x) quant_bands_unsigned_neon: 2089.5 ( 2.62x) size= 5251KiB time=00:10:00.00 bitrate= 71.7kbits/s speed=34.3x size= 5251KiB time=00:10:00.00 bitrate= 71.7kbits/s speed=37.8 - x13s abs_pow34_c: 2413.4 ( 1.00x) abs_pow34_neon: 1796.2 ( 1.34x) quant_bands_signed_c: 2968.9 ( 1.00x) quant_bands_signed_neon: 675.6 ( 4.39x) quant_bands_unsigned_c: 2311.9 ( 1.00x) quant_bands_unsigned_neon: 477.1 ( 4.85x) size= 5251KiB time=00:10:00.00 bitrate= 71.7kbits/s speed= 135x size= 5251KiB time=00:10:00.00 bitrate= 71.7kbits/s speed= 159x Signed-off-by: Martin Storsjö <martin@martin.st>
64 lines
2 KiB
ArmAsm
64 lines
2 KiB
ArmAsm
/*
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* Copyright (c) 2025 Krzysztof Aleksander Pyrkosz
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/aarch64/asm.S"
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function ff_abs_pow34_neon, export=1
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1:
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ld1 {v0.4s}, [x1], #16
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subs w2, w2, #4
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fabs v0.4s, v0.4s
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fsqrt v2.4s, v0.4s
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fmul v0.4s, v2.4s, v0.4s
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fsqrt v0.4s, v0.4s
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st1 {v0.4s}, [x0], #16
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b.ne 1b
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ret
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endfunc
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function ff_aac_quant_bands_neon, export=1
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scvtf s2, w5
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dup v1.4s, v1.s[0]
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dup v2.4s, v2.s[0]
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cbz w4, 0f
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movi v5.4s, 0x80, lsl #24
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.irp signed,1,0
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\signed:
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ld1 {v3.4s}, [x2], #16
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subs w3, w3, #4
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fmul v3.4s, v3.4s, v0.s[0]
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.if \signed
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ld1 {v4.4s}, [x1], #16
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.endif
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fadd v3.4s, v3.4s, v1.4s
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.if \signed
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and v4.16b, v4.16b, v5.16b
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.endif
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fmin v3.4s, v3.4s, v2.4s
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.if \signed
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eor v3.16b, v4.16b, v3.16b
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.endif
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fcvtzs v3.4s, v3.4s
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st1 {v3.4s}, [x0], #16
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b.ne \signed\()b
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ret
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.endr
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endfunc
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