Imported Upstream version 0.72

rs-encoder-sse2.c

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+/*  dvdisaster: Additional error correction for optical media.
+ *  Copyright (C) 2004-2009 Carsten Gnoerlich.
+ *  Project home page: http://www.dvdisaster.com
+ *  Email: carsten@dvdisaster.com  -or-  cgnoerlich@fsfe.org
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA,
+ *  or direct your browser at http://www.gnu.org.
+ */
+
+#include "dvdisaster.h"
+
+#ifdef HAVE_SSE2
+  #include <emmintrin.h>
+
+#ifdef HAVE_CPUID
+  #include <cpuid.h>
+#else
+  #include "compat/cpuid.h"
+#endif
+#endif
+
+/***
+ *** Reed-Solomon encoding using SSE2 intrinsics
+ ***/
+
+/* SSE 2 version */
+
+#ifdef HAVE_SSE2 
+int ProbeSSE2(void)
+{  unsigned int eax, ebx, ecx, edx;
+
+   if(!__get_cpuid(1, &eax, &ebx, &ecx, &edx))
+   {  Verbose("[ProbeSSE2: get_cpuid() failed]\n");
+      return 0;
+   }
+
+   if(edx & bit_SSE2)
+   {  Verbose("[ProbeSSE2: SSE2 available]\n");
+      return 1;
+   }
+   else
+   {  Verbose("[ProbeSSE2: no SSE2]\n");
+      return 0;
+   }
+}
+
+#else /* don't have SSE2 */
+/* Stub functions to keep the linker happy.
+ * Should never be executed.
+ */
+
+int ProbeSSE2()
+{  return 0;
+}
+#endif /* HAVE_SSE2 */
+