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
ff_pngdsp_init_x86(PNGDSPContext * dsp)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 }
51