1/* 2 * x86 PNG optimizations. 3 * Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "libavutil/attributes.h" 23#include "libavutil/common.h" 24#include "libavutil/x86/cpu.h" 25#include "libavcodec/pngdsp.h" 26 27void ff_add_png_paeth_prediction_mmxext(uint8_t *dst, uint8_t *src, 28 uint8_t *top, int w, int bpp); 29void ff_add_png_paeth_prediction_ssse3(uint8_t *dst, uint8_t *src, 30 uint8_t *top, int w, int bpp); 31void ff_add_bytes_l2_mmx (uint8_t *dst, uint8_t *src1, 32 uint8_t *src2, int w); 33void ff_add_bytes_l2_sse2(uint8_t *dst, uint8_t *src1, 34 uint8_t *src2, int w); 35 36av_cold void ff_pngdsp_init_x86(PNGDSPContext *dsp) 37{ 38 int cpu_flags = av_get_cpu_flags(); 39 40#if ARCH_X86_32 41 if (EXTERNAL_MMX(cpu_flags)) 42 dsp->add_bytes_l2 = ff_add_bytes_l2_mmx; 43#endif 44 if (EXTERNAL_MMXEXT(cpu_flags)) 45 dsp->add_paeth_prediction = ff_add_png_paeth_prediction_mmxext; 46 if (EXTERNAL_SSE2(cpu_flags)) 47 dsp->add_bytes_l2 = ff_add_bytes_l2_sse2; 48 if (EXTERNAL_SSSE3(cpu_flags)) 49 dsp->add_paeth_prediction = ff_add_png_paeth_prediction_ssse3; 50} 51