| 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 | |
| 27 | void ff_add_png_paeth_prediction_mmxext(uint8_t *dst, uint8_t *src, |
| 28 | uint8_t *top, int w, int bpp); |
| 29 | void ff_add_png_paeth_prediction_ssse3(uint8_t *dst, uint8_t *src, |
| 30 | uint8_t *top, int w, int bpp); |
| 31 | void ff_add_bytes_l2_mmx (uint8_t *dst, uint8_t *src1, |
| 32 | uint8_t *src2, int w); |
| 33 | void ff_add_bytes_l2_sse2(uint8_t *dst, uint8_t *src1, |
| 34 | uint8_t *src2, int w); |
| 35 | |
| 36 | av_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 | } |