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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <stddef.h>
20 #include <stdint.h>
21 
22 #include "libavutil/cpu.h"
23 #include "libavutil/error.h"
24 #include "libavutil/imgutils_internal.h"
25 #include "libavutil/macros.h"
26 
27 #include "cpu.h"
28 
29 void ff_image_copy_plane_uc_from_sse4(uint8_t *dst, ptrdiff_t dst_linesize,
30                                       const uint8_t *src, ptrdiff_t src_linesize,
31                                       ptrdiff_t bytewidth, int height);
32 
ff_image_copy_plane_uc_from_x86(uint8_t * dst,ptrdiff_t dst_linesize,const uint8_t * src,ptrdiff_t src_linesize,ptrdiff_t bytewidth,int height)33 int ff_image_copy_plane_uc_from_x86(uint8_t       *dst, ptrdiff_t dst_linesize,
34                                     const uint8_t *src, ptrdiff_t src_linesize,
35                                     ptrdiff_t bytewidth, int height)
36 {
37     int cpu_flags = av_get_cpu_flags();
38     ptrdiff_t bw_aligned = FFALIGN(bytewidth, 64);
39 
40     if (EXTERNAL_SSE4(cpu_flags) &&
41         bw_aligned <= dst_linesize && bw_aligned <= src_linesize)
42         ff_image_copy_plane_uc_from_sse4(dst, dst_linesize, src, src_linesize,
43                                          bw_aligned, height);
44     else
45         return AVERROR(ENOSYS);
46 
47     return 0;
48 }
49