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Diffstat (limited to 'libavutil/cpu.c')
-rw-r--r--libavutil/cpu.c142
1 files changed, 129 insertions, 13 deletions
diff --git a/libavutil/cpu.c b/libavutil/cpu.c
index 7d7390a756..f5785fc13f 100644
--- a/libavutil/cpu.c
+++ b/libavutil/cpu.c
@@ -1,18 +1,18 @@
/*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -25,10 +25,12 @@
#include "common.h"
#if HAVE_SCHED_GETAFFINITY
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
#include <sched.h>
#endif
-#if HAVE_GETPROCESSAFFINITYMASK
+#if HAVE_GETPROCESSAFFINITYMASK || HAVE_WINRT
#include <windows.h>
#endif
#if HAVE_SYSCTL
@@ -38,16 +40,41 @@
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
-#if HAVE_SYSCONF
+#if HAVE_UNISTD_H
#include <unistd.h>
#endif
-static int cpuflags_mask = -1, checked;
+static int flags, checked;
+
+void av_force_cpu_flags(int arg){
+ if ( (arg & ( AV_CPU_FLAG_3DNOW |
+ AV_CPU_FLAG_3DNOWEXT |
+ AV_CPU_FLAG_MMXEXT |
+ AV_CPU_FLAG_SSE |
+ AV_CPU_FLAG_SSE2 |
+ AV_CPU_FLAG_SSE2SLOW |
+ AV_CPU_FLAG_SSE3 |
+ AV_CPU_FLAG_SSE3SLOW |
+ AV_CPU_FLAG_SSSE3 |
+ AV_CPU_FLAG_SSE4 |
+ AV_CPU_FLAG_SSE42 |
+ AV_CPU_FLAG_AVX |
+ AV_CPU_FLAG_AVXSLOW |
+ AV_CPU_FLAG_XOP |
+ AV_CPU_FLAG_FMA3 |
+ AV_CPU_FLAG_FMA4 |
+ AV_CPU_FLAG_AVX2 ))
+ && !(arg & AV_CPU_FLAG_MMX)) {
+ av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n");
+ arg |= AV_CPU_FLAG_MMX;
+ }
+
+ flags = arg;
+ checked = arg != -1;
+}
int av_get_cpu_flags(void)
{
- static int flags;
-
if (checked)
return flags;
@@ -60,16 +87,15 @@ int av_get_cpu_flags(void)
if (ARCH_X86)
flags = ff_get_cpu_flags_x86();
- flags &= cpuflags_mask;
checked = 1;
-
return flags;
}
void av_set_cpu_flags_mask(int mask)
{
- cpuflags_mask = mask;
checked = 0;
+ flags = av_get_cpu_flags() & mask;
+ checked = 1;
}
int av_parse_cpu_flags(const char *s)
@@ -92,6 +118,7 @@ int av_parse_cpu_flags(const char *s)
#define CPUFLAG_FMA4 (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)
#define CPUFLAG_AVX2 (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX)
#define CPUFLAG_BMI2 (AV_CPU_FLAG_BMI2 | AV_CPU_FLAG_BMI1)
+#define CPUFLAG_AESNI (AV_CPU_FLAG_AESNI | CPUFLAG_SSE42)
static const AVOption cpuflags_opts[] = {
{ "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
#if ARCH_PPC
@@ -119,6 +146,7 @@ int av_parse_cpu_flags(const char *s)
{ "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOW }, .unit = "flags" },
{ "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOWEXT }, .unit = "flags" },
{ "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" },
+ { "aesni" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AESNI }, .unit = "flags" },
#elif ARCH_ARM
{ "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },
{ "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" },
@@ -150,9 +178,89 @@ int av_parse_cpu_flags(const char *s)
return flags & INT_MAX;
}
+int av_parse_cpu_caps(unsigned *flags, const char *s)
+{
+ static const AVOption cpuflags_opts[] = {
+ { "flags" , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
+#if ARCH_PPC
+ { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC }, .unit = "flags" },
+#elif ARCH_X86
+ { "mmx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },
+ { "mmx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" },
+ { "mmxext" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2 }, .unit = "flags" },
+ { "sse" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE }, .unit = "flags" },
+ { "sse2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2 }, .unit = "flags" },
+ { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2SLOW }, .unit = "flags" },
+ { "sse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3 }, .unit = "flags" },
+ { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3SLOW }, .unit = "flags" },
+ { "ssse3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSSE3 }, .unit = "flags" },
+ { "atom" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM }, .unit = "flags" },
+ { "sse4.1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE4 }, .unit = "flags" },
+ { "sse4.2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE42 }, .unit = "flags" },
+ { "avx" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX }, .unit = "flags" },
+ { "avxslow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVXSLOW }, .unit = "flags" },
+ { "xop" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_XOP }, .unit = "flags" },
+ { "fma3" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA3 }, .unit = "flags" },
+ { "fma4" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA4 }, .unit = "flags" },
+ { "avx2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX2 }, .unit = "flags" },
+ { "bmi1" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI1 }, .unit = "flags" },
+ { "bmi2" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI2 }, .unit = "flags" },
+ { "3dnow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOW }, .unit = "flags" },
+ { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOWEXT }, .unit = "flags" },
+ { "cmov", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV }, .unit = "flags" },
+ { "aesni", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AESNI }, .unit = "flags" },
+
+#define CPU_FLAG_P2 AV_CPU_FLAG_CMOV | AV_CPU_FLAG_MMX
+#define CPU_FLAG_P3 CPU_FLAG_P2 | AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE
+#define CPU_FLAG_P4 CPU_FLAG_P3| AV_CPU_FLAG_SSE2
+ { "pentium2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P2 }, .unit = "flags" },
+ { "pentium3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P3 }, .unit = "flags" },
+ { "pentium4", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P4 }, .unit = "flags" },
+
+#define CPU_FLAG_K62 AV_CPU_FLAG_MMX | AV_CPU_FLAG_3DNOW
+#define CPU_FLAG_ATHLON CPU_FLAG_K62 | AV_CPU_FLAG_CMOV | AV_CPU_FLAG_3DNOWEXT | AV_CPU_FLAG_MMX2
+#define CPU_FLAG_ATHLONXP CPU_FLAG_ATHLON | AV_CPU_FLAG_SSE
+#define CPU_FLAG_K8 CPU_FLAG_ATHLONXP | AV_CPU_FLAG_SSE2
+ { "k6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX }, .unit = "flags" },
+ { "k62", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K62 }, .unit = "flags" },
+ { "athlon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLON }, .unit = "flags" },
+ { "athlonxp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLONXP }, .unit = "flags" },
+ { "k8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K8 }, .unit = "flags" },
+#elif ARCH_ARM
+ { "armv5te", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE }, .unit = "flags" },
+ { "armv6", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6 }, .unit = "flags" },
+ { "armv6t2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2 }, .unit = "flags" },
+ { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
+ { "vfp_vm", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP_VM }, .unit = "flags" },
+ { "vfpv3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3 }, .unit = "flags" },
+ { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
+ { "setend", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SETEND }, .unit = "flags" },
+#elif ARCH_AARCH64
+ { "armv8", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8 }, .unit = "flags" },
+ { "neon", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON }, .unit = "flags" },
+ { "vfp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP }, .unit = "flags" },
+#endif
+ { NULL },
+ };
+ static const AVClass class = {
+ .class_name = "cpuflags",
+ .item_name = av_default_item_name,
+ .option = cpuflags_opts,
+ .version = LIBAVUTIL_VERSION_INT,
+ };
+ const AVClass *pclass = &class;
+
+ return av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, flags);
+}
+
int av_cpu_count(void)
{
+ static volatile int printed;
+
int nb_cpus = 1;
+#if HAVE_WINRT
+ SYSTEM_INFO sysinfo;
+#endif
#if HAVE_SCHED_GETAFFINITY && defined(CPU_COUNT)
cpu_set_t cpuset;
@@ -174,7 +282,15 @@ int av_cpu_count(void)
nb_cpus = sysconf(_SC_NPROC_ONLN);
#elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN)
nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);
+#elif HAVE_WINRT
+ GetNativeSystemInfo(&sysinfo);
+ nb_cpus = sysinfo.dwNumberOfProcessors;
#endif
+ if (!printed) {
+ av_log(NULL, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
+ printed = 1;
+ }
+
return nb_cpus;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-03 20:20:56 +0000