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On WIN32 fseek() returns 0 on pipes, use GetFileType() to detect them.

--- a/src/audio-in.c

+++ b/src/audio-in.c

@@ -40,6 +40,8 @@

 #ifdef WIN32

 # include <malloc.h>

+# include <windows.h> /*GetFileType()*/

+# include <io.h>      /*_get_osfhandle()*/

 #else

 # ifdef HAVE_ALLOCA_H

 #  include <alloca.h>

@@ -588,7 +590,12 @@

         {

             opt->total_samples_per_channel = len/(format.channels*samplesize);

         }

+#ifdef WIN32

+        /*On Mingw/Win32 fseek() returns zero on pipes.*/

+        else if (opt->ignorelength==1 || ((GetFileType((HANDLE)_get_osfhandle(fileno(in)))&~FILE_TYPE_REMOTE)!=FILE_TYPE_DISK))

+#else

         else if (opt->ignorelength==1)

+#endif

         {

            opt->total_samples_per_channel = 0;

         }