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We introduced a ff_horiz_slice_avx2/512() implemented on a new algorithm. In a nutshell, the new algorithm does three things, gathering data from 8/16 rows, blurring data, and scattering data back to the image buffer. Here we used a customized transpose 8x8/16x16 to avoid the huge overhead brought by gather and scatter instructions, which is dependent on the temporary buffer called localbuf added newly. Performance data: ff_horiz_slice_avx2(old): 109.89 ff_horiz_slice_avx2(new): 666.67 ff_horiz_slice_avx512: 1000 Co-authored-by: Cheng Yanfei <yanfei.cheng@intel.com> Co-authored-by: Jin Jun <jun.i.jin@intel.com> Signed-off-by: Wu Jianhua <jianhua.wu@intel.com>
63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
/*
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* Copyright (c) 2011 Pascal Getreuer
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* Copyright (c) 2016 Paul B Mahol
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef AVFILTER_GBLUR_H
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#define AVFILTER_GBLUR_H
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#include "avfilter.h"
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typedef struct GBlurContext {
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const AVClass *class;
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float sigma;
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float sigmaV;
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int steps;
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int planes;
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int flt;
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int depth;
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int stride;
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int planewidth[4];
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int planeheight[4];
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float *buffer;
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float *localbuf; ///< temporary buffer for horiz_slice. NULL if not used
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float boundaryscale;
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float boundaryscaleV;
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float postscale;
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float postscaleV;
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float nu;
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float nuV;
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int nb_planes;
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void (*horiz_slice)(float *buffer, int width, int height, int steps, float nu, float bscale, float *localbuf);
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void (*verti_slice)(float *buffer, int width, int height, int slice_start, int slice_end, int steps,
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float nu, float bscale);
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void (*postscale_slice)(float *buffer, int length, float postscale, float min, float max);
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} GBlurContext;
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void ff_gblur_init(GBlurContext *s);
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void ff_gblur_init_x86(GBlurContext *s);
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#endif
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