xvididct: Ensure that the scantable permutation is always set correctly
[libav.git] / libavcodec / x86 / xvididct_init.c
1 /*
2 * This file is part of Libav.
3 *
4 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "config.h"
20 #include "libavutil/attributes.h"
21 #include "libavutil/cpu.h"
22 #include "libavutil/x86/cpu.h"
23 #include "libavcodec/idctdsp.h"
24 #include "libavcodec/xvididct.h"
25 #include "idct_xvid.h"
26 #include "idctdsp.h"
27
28 av_cold void ff_xvididct_init_x86(IDCTDSPContext *c)
29 {
30 int cpu_flags = av_get_cpu_flags();
31
32 if (INLINE_MMX(cpu_flags)) {
33 c->idct_put = ff_idct_xvid_mmx_put;
34 c->idct_add = ff_idct_xvid_mmx_add;
35 c->idct = ff_idct_xvid_mmx;
36 c->perm_type = FF_IDCT_PERM_NONE;
37 }
38
39 if (INLINE_MMXEXT(cpu_flags)) {
40 c->idct_put = ff_idct_xvid_mmxext_put;
41 c->idct_add = ff_idct_xvid_mmxext_add;
42 c->idct = ff_idct_xvid_mmxext;
43 c->perm_type = FF_IDCT_PERM_NONE;
44 }
45
46 if (INLINE_SSE2(cpu_flags)) {
47 c->idct_put = ff_idct_xvid_sse2_put;
48 c->idct_add = ff_idct_xvid_sse2_add;
49 c->idct = ff_idct_xvid_sse2;
50 c->perm_type = FF_IDCT_PERM_SSE2;
51 }
52 }