FFmpeg
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pngdsp_init.c
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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 
28  uint8_t *top, int w, int bpp);
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 
37 {
38  int flags = av_get_cpu_flags();
39 
40 #if ARCH_X86_32
41  if (EXTERNAL_MMX(flags))
43 #endif
44  if (EXTERNAL_MMXEXT(flags))
46  if (EXTERNAL_SSE2(flags))
48  if (EXTERNAL_SSSE3(flags))
50 }