aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* x86 PNG optimizations.
* Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu>
*
* 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/attributes.h"
#include "libavutil/common.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/pngdsp.h"
void ff_add_png_paeth_prediction_mmxext(uint8_t *dst, uint8_t *src,
uint8_t *top, int w, int bpp);
void ff_add_png_paeth_prediction_ssse3(uint8_t *dst, uint8_t *src,
uint8_t *top, int w, int bpp);
void ff_add_bytes_l2_mmx (uint8_t *dst, uint8_t *src1,
uint8_t *src2, int w);
void ff_add_bytes_l2_sse2(uint8_t *dst, uint8_t *src1,
uint8_t *src2, int w);
av_cold void ff_pngdsp_init_x86(PNGDSPContext *dsp)
{
int cpu_flags = av_get_cpu_flags();
#if ARCH_X86_32
if (EXTERNAL_MMX(cpu_flags))
dsp->add_bytes_l2 = ff_add_bytes_l2_mmx;
#endif
if (EXTERNAL_MMXEXT(cpu_flags))
dsp->add_paeth_prediction = ff_add_png_paeth_prediction_mmxext;
if (EXTERNAL_SSE2(cpu_flags))
dsp->add_bytes_l2 = ff_add_bytes_l2_sse2;
if (EXTERNAL_SSSE3(cpu_flags))
dsp->add_paeth_prediction = ff_add_png_paeth_prediction_ssse3;
}
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