libx264: Allow overriding the sliced threads option
[libav.git] / libavutil / cpu.c
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c6c98d08 1/*
2912e87a 2 * This file is part of Libav.
c6c98d08 3 *
2912e87a 4 * Libav is free software; you can redistribute it and/or
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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 *
2912e87a 9 * Libav is distributed in the hope that it will be useful,
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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
2912e87a 15 * License along with Libav; if not, write to the Free Software
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16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#include "cpu.h"
20#include "config.h"
21
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22int av_get_cpu_flags(void)
23{
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24 static int flags, checked;
25
26 if (checked)
27 return flags;
28
29 if (ARCH_ARM) flags = ff_get_cpu_flags_arm();
30 if (ARCH_PPC) flags = ff_get_cpu_flags_ppc();
31 if (ARCH_X86) flags = ff_get_cpu_flags_x86();
32
33 checked = 1;
34 return flags;
c6c98d08 35}
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36
37#ifdef TEST
38
39#undef printf
ec5f5719 40#include <stdio.h>
c6c98d08 41
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42static const struct {
43 int flag;
44 const char *name;
45} cpu_flag_tab[] = {
46#if ARCH_ARM
47 { AV_CPU_FLAG_IWMMXT, "iwmmxt" },
48#elif ARCH_PPC
49 { AV_CPU_FLAG_ALTIVEC, "altivec" },
50#elif ARCH_X86
51 { AV_CPU_FLAG_MMX, "mmx" },
52 { AV_CPU_FLAG_MMX2, "mmx2" },
53 { AV_CPU_FLAG_SSE, "sse" },
54 { AV_CPU_FLAG_SSE2, "sse2" },
55 { AV_CPU_FLAG_SSE2SLOW, "sse2(slow)" },
56 { AV_CPU_FLAG_SSE3, "sse3" },
57 { AV_CPU_FLAG_SSE3SLOW, "sse3(slow)" },
58 { AV_CPU_FLAG_SSSE3, "ssse3" },
59 { AV_CPU_FLAG_ATOM, "atom" },
60 { AV_CPU_FLAG_SSE4, "sse4.1" },
61 { AV_CPU_FLAG_SSE42, "sse4.2" },
62 { AV_CPU_FLAG_AVX, "avx" },
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63 { AV_CPU_FLAG_XOP, "xop" },
64 { AV_CPU_FLAG_FMA4, "fma4" },
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65 { AV_CPU_FLAG_3DNOW, "3dnow" },
66 { AV_CPU_FLAG_3DNOWEXT, "3dnowext" },
67#endif
68 { 0 }
69};
70
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71int main(void)
72{
73 int cpu_flags = av_get_cpu_flags();
c31bc537 74 int i;
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75
76 printf("cpu_flags = 0x%08X\n", cpu_flags);
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77 printf("cpu_flags =");
78 for (i = 0; cpu_flag_tab[i].flag; i++)
79 if (cpu_flags & cpu_flag_tab[i].flag)
80 printf(" %s", cpu_flag_tab[i].name);
81 printf("\n");
82
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83 return 0;
84}
85
86#endif