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Redid the cpu detection with a little help from mpeg2decs code..

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Original commit message from CVS:
Redid the cpu detection with a little help from mpeg2decs code..
This commit is contained in:
Wim Taymans 2001-02-28 20:32:47 +00:00
parent 1c09d79673
commit 18964cbfac
1 changed files with 28 additions and 13 deletions
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25
gst/gstcpu.c
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@ -48,32 +48,47 @@ static gchar *stringcat (gchar *a,gchar *b) {
return c; return c;
} }
void void
_gst_cpu_initialize (void) _gst_cpu_initialize (void)
{ {
gchar *featurelist = NULL; gchar *featurelist = NULL;
gboolean AMD;
long eax=0, ebx=0, ecx=0, edx=0; long eax=0, ebx=0, ecx=0, edx=0;
gst_cpuid(0, &eax, &ebx, &ecx, &edx);
AMD = (ebx == 0x68747541) && (ecx == 0x444d4163) && (edx == 0x69746e65);
gst_cpuid(1, &eax, &ebx, &ecx, &edx); gst_cpuid(1, &eax, &ebx, &ecx, &edx);
if (edx & (1<<23)) { if (edx & (1<<23)) {
_gst_cpu_flags |= GST_CPU_FLAG_MMX; _gst_cpu_flags |= GST_CPU_FLAG_MMX;
featurelist = stringcat(featurelist,"MMX "); featurelist = stringcat(featurelist,"MMX ");
}
if (edx & (1<<25)) { if (edx & (1<<25)) {
_gst_cpu_flags |= GST_CPU_FLAG_SSE; _gst_cpu_flags |= GST_CPU_FLAG_SSE;
_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT; _gst_cpu_flags |= GST_CPU_FLAG_MMXEXT;
featurelist = stringcat(featurelist,"SSE "); featurelist = stringcat(featurelist,"SSE ");
} }
if (edx & (1<<24)) {
_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT; gst_cpuid(0x80000000, &eax, &ebx, &ecx, &edx);
featurelist = stringcat(featurelist,"MMXEXT ");
} if (eax >= 0x80000001) {
gst_cpuid(0x80000001, &eax, &ebx, &ecx, &edx);
if (edx & (1<<31)) { if (edx & (1<<31)) {
_gst_cpu_flags |= GST_CPU_FLAG_3DNOW; _gst_cpu_flags |= GST_CPU_FLAG_3DNOW;
featurelist = stringcat(featurelist,"3DNOW "); featurelist = stringcat(featurelist,"3DNOW ");
} }
if (AMD && (edx & (1<<22))) {
_gst_cpu_flags |= GST_CPU_FLAG_MMXEXT;
featurelist = stringcat(featurelist,"MMXEXT ");
}
}
}
if (!_gst_cpu_flags) { if (!_gst_cpu_flags) {
featurelist = stringcat(featurelist,"NONE"); featurelist = stringcat(featurelist,"NONE");