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cddb25c848
It is overridden by ff_add_bytes_l2_sse2() on any non-ancient CPU. Reviewed-by: Henrik Gramner <henrik@gramner.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/*
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* x86 PNG optimizations.
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* Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu>
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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 <stdint.h>
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#include "libavutil/attributes.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/pngdsp.h"
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void ff_add_png_paeth_prediction_mmxext(uint8_t *dst, uint8_t *src,
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uint8_t *top, int w, int bpp);
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void ff_add_png_paeth_prediction_ssse3(uint8_t *dst, uint8_t *src,
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uint8_t *top, int w, int bpp);
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void ff_add_bytes_l2_sse2(uint8_t *dst, uint8_t *src1,
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uint8_t *src2, int w);
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av_cold void ff_pngdsp_init_x86(PNGDSPContext *dsp)
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{
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int cpu_flags = av_get_cpu_flags();
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if (EXTERNAL_MMXEXT(cpu_flags))
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dsp->add_paeth_prediction = ff_add_png_paeth_prediction_mmxext;
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if (EXTERNAL_SSE2(cpu_flags))
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dsp->add_bytes_l2 = ff_add_bytes_l2_sse2;
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if (EXTERNAL_SSSE3(cpu_flags))
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dsp->add_paeth_prediction = ff_add_png_paeth_prediction_ssse3;
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}
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