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DROOdotFOO
ff22978529
depth==8 routes to threshold8_neon (16 bytes/chunk); depth > 8 to threshold16_neon (8 shorts/chunk, covering 9/10/12/14/16). C is not auto-vectorized: four independent input streams defeat clang's vectorizer. Per chunk the NEON kernel is cmhs+bsl. checkasm --bench, Apple M1 (clang), speedup vs C: threshold8 15.0x threshold10 8.1x threshold12 8.2x threshold16 8.2x Signed-off-by: DROOdotFOO <drew@axol.io>
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* Copyright (c) 2016 Paul B Mahol
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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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#ifndef AVFILTER_THRESHOLD_H
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#define AVFILTER_THRESHOLD_H
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#include "avfilter.h"
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#include "framesync.h"
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typedef struct ThresholdContext {
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const AVClass *class;
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int depth;
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int planes;
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int bpc;
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int nb_planes;
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int width[4], height[4];
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void (*threshold)(const uint8_t *in, const uint8_t *threshold,
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const uint8_t *min, const uint8_t *max,
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uint8_t *out,
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ptrdiff_t ilinesize, ptrdiff_t tlinesize,
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ptrdiff_t flinesize, ptrdiff_t slinesize,
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ptrdiff_t olinesize,
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int w, int h);
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AVFrame *frames[4];
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FFFrameSync fs;
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} ThresholdContext;
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void ff_threshold_init_x86(ThresholdContext *s);
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void ff_threshold_init_aarch64(ThresholdContext *s);
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#endif /* AVFILTER_THRESHOLD_H */
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