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/* |
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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 "libavutil/attributes.h" |
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#include "libavutil/common.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_mmx (uint8_t *dst, uint8_t *src1, |
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uint8_t *src2, int w); |
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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 ARCH_X86_32 |
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if (EXTERNAL_MMX(cpu_flags)) |
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dsp->add_bytes_l2 = ff_add_bytes_l2_mmx; |
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#endif |
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✓✓ |
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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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✓✓ |
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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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✓✓ |
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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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} |