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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstcpu.c: CPU detection and architecture-specific routines
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <glib.h>
#include "gst_private.h"
#include "gstcpu.h"
static guint32 _gst_cpu_flags;
#ifdef HAVE_CPU_I386
void gst_cpuid_i386(int,long *,long *,long *,long *);
#define gst_cpuid gst_cpuid_i386
#else
#define gst_cpuid(o,a,b,c,d) (void)(a);(void)(b);(void)(c);
#endif
static gchar *stringcat (gchar *a,gchar *b) {
gchar *c;
if (a) {
c = g_strconcat(a,b,NULL);
g_free (a);
} else {
c = g_strdup(b);
}
return c;
}
void
_gst_cpu_initialize (void)
{
gchar *featurelist = NULL;
long eax=0, ebx=0, ecx=0, edx=0;
gst_cpuid(1, &eax, &ebx, &ecx, &edx);
if (edx & (1<<23)) {
_gst_cpu_flags |= GST_CPU_FLAG_MMX;
featurelist = stringcat(featurelist,"MMX ");
}
if (edx & (1<<25)) {
_gst_cpu_flags |= GST_CPU_FLAG_SSE;
_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT;
featurelist = stringcat(featurelist,"SSE ");
}
if (edx & (1<<24)) {
_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT;
featurelist = stringcat(featurelist,"MMXEXT ");
}
if (edx & (1<<31)) {
_gst_cpu_flags |= GST_CPU_FLAG_3DNOW;
featurelist = stringcat(featurelist,"3DNOW ");
}
if (!_gst_cpu_flags) {
featurelist = stringcat(featurelist,"NONE");
}
GST_INFO (GST_CAT_GST_INIT, "CPU features: (%08lx) %s",edx, featurelist);
g_free(featurelist);
}
GstCPUFlags
gst_cpu_get_flags (void)
{
return _gst_cpu_flags;
}
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