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fdctdsp_init.c
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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 "libavutil/attributes.h"
20 #include "libavutil/cpu.h"
21 #include "libavutil/x86/cpu.h"
22 #include "libavcodec/avcodec.h"
23 #include "libavcodec/fdctdsp.h"
24 #include "fdct.h"
25 
27  unsigned high_bit_depth)
28 {
29  int cpu_flags = av_get_cpu_flags();
30  const int dct_algo = avctx->dct_algo;
31 
32  if (!high_bit_depth) {
33  if ((dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX)) {
34  if (INLINE_MMX(cpu_flags))
35  c->fdct = ff_fdct_mmx;
36 
37  if (INLINE_MMXEXT(cpu_flags))
38  c->fdct = ff_fdct_mmxext;
39 
40  if (INLINE_SSE2(cpu_flags))
41  c->fdct = ff_fdct_sse2;
42  }
43  }
44 }