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52fa416005
Original commit message from CVS: CPU detection of MMXEXT and probably 3DNOW (not on Athlon yet) Renamed the mmxe motion compentation files. disabled SSE optimisation in ac3dec because it apparently faults.. enable MMXEXT motion compensation on non SSE CPUs (AMD)
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstcpu.c: CPU detection and architecture-specific routines
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <glib.h>
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#include "gst_private.h"
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#include "gstcpu.h"
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static guint32 _gst_cpu_flags;
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#ifdef HAVE_CPU_I386
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void gst_cpuid_i386(int,long *,long *,long *,long *);
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#define gst_cpuid gst_cpuid_i386
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#else
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#define gst_cpuid(o,a,b,c,d) (void)(a);(void)(b);(void)(c);
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#endif
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static gchar *stringcat (gchar *a,gchar *b) {
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gchar *c;
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if (a) {
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c = g_strconcat(a,b,NULL);
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g_free (a);
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} else {
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c = g_strdup(b);
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}
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return c;
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}
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void
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_gst_cpu_initialize (void)
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{
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gchar *featurelist = NULL;
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long eax=0, ebx=0, ecx=0, edx=0;
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gst_cpuid(1, &eax, &ebx, &ecx, &edx);
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if (edx & (1<<23)) {
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_gst_cpu_flags |= GST_CPU_FLAG_MMX;
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featurelist = stringcat(featurelist,"MMX ");
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}
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if (edx & (1<<25)) {
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_gst_cpu_flags |= GST_CPU_FLAG_SSE;
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_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT;
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featurelist = stringcat(featurelist,"SSE ");
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}
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if (edx & (1<<24)) {
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_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT;
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featurelist = stringcat(featurelist,"MMXEXT ");
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}
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if (edx & (1<<31)) {
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_gst_cpu_flags |= GST_CPU_FLAG_3DNOW;
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featurelist = stringcat(featurelist,"3DNOW ");
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}
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if (!_gst_cpu_flags) {
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featurelist = stringcat(featurelist,"NONE");
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}
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GST_INFO (GST_CAT_GST_INIT, "CPU features: (%08lx) %s",edx, featurelist);
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g_free(featurelist);
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}
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GstCPUFlags
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gst_cpu_get_flags (void)
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{
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return _gst_cpu_flags;
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}
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