fseeko emulation patch by Steven M. Schultz <sms at 2bsd.com>

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12072 b3059339-0415-0410-9bf9-f77b7e298cf2

configure

@@ -2613,6 +2613,19 @@ else
 fi
 echores "$_strsep"
 
+echocheck "fseeko()"
+cat > $TMPC << EOF
+#include <stdio.h>
+int main (void) { int i; i = fseeko(stdin, 0, 0); return 0; }
+EOF
+_fseeko=no
+cc_check && _fseeko=yes
+if test "$_fseeko" = yes ; then
+ _def_fseeko='#define HAVE_FSEEKO 1'
+else
+ _def_fseeko='#undef HAVE_FSEEKO'
+fi
+echores "$_fseeko"
 
 echocheck "vsscanf()"
 cat > $TMPC << EOF
@@ -5697,9 +5710,10 @@ if test "$_largefiles" = yes || freebsd ; then
 fi
 
 echocheck "ftello()"
-# if we don't have ftello map it to ftell
+# if we don't have ftello use the osdep/ compatibility module
 cat > $TMPC << EOF
 #include <stdio.h>
+#include <sys/types.h>
 int main (void) { ftello(stdin); return 0; }
 EOF
 _ftello=no
@@ -6133,11 +6147,14 @@ $_def_soundcard
 /* Define this if your system has the sysinfo header */
 $_def_sys_sysinfo
 
-/* Define this if your system uses ftello() for off_t seeking */
+/* Define this if your system has ftello() */
 
 $_def_ftello
 #ifndef HAVE_FTELLO
-# define ftello(a) ftell(a)
+/* Need these for FILE and off_t an config.h is usually before other includes*/
+#include <stdio.h>
+#include <sys/types.h>
+off_t ftello(FILE *);
 #endif
 
 /* Define this if your system has the "malloc.h" header file */
@@ -6176,6 +6193,15 @@ $_def_scandir
 /* Define this if your system has strsep */
 $_def_strsep
 
+/* Define this if your system has fseeko */
+$_def_fseeko
+#ifndef HAVE_FSEEKO
+/* Need these for FILE and off_t an config.h is usually before other includes*/
+#include <stdio.h>
+#include <sys/types.h>
+int fseeko(FILE *, off_t, int);
+#endif
+
 /* Define this if your system has vsscanf */
 $_def_vsscanf
 

osdep/Makefile

@@ -3,7 +3,7 @@ include ../config.mak
 
 LIBNAME = libosdep.a
 
-SRCS= shmem.c strsep.c vsscanf.c scandir.c gettimeofday.c # timer.c
+SRCS= shmem.c strsep.c vsscanf.c scandir.c gettimeofday.c fseeko.c # timer.c
 
 ifeq ($(TARGET_ARCH_X86),yes)
 ifeq ($(TARGET_OS),Linux)

osdep/fseeko.c

@@ -0,0 +1,84 @@
+/*
+ * fseeko.c
+ *	  64-bit versions of fseeko/ftello() for systems which do not have them
+ */
+
+#include "../config.h"
+ 
+#if !defined(HAVE_FSEEKO) || !defined(HAVE_FTELLO)
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#endif
+
+#ifdef WIN32
+#define flockfile
+#define funlockfile
+#endif
+
+/*
+ *	On BSD/OS and NetBSD (and perhaps others), off_t and fpos_t are the 
+ *      same.  Standards say off_t is an arithmetic type, but not necessarily 
+ *      integral, while fpos_t might be neither.
+ *
+ *	This is thread-safe on BSD/OS using flockfile/funlockfile.
+ */
+
+#ifndef HAVE_FSEEKO
+int
+fseeko(FILE *stream, off_t offset, int whence)
+{
+	off_t floc;
+	struct stat filestat;
+
+	switch (whence)
+	{
+		case SEEK_CUR:
+			flockfile(stream);
+			if (fgetpos(stream, &floc) != 0)
+				goto failure;
+			floc += offset;
+			if (fsetpos(stream, &floc) != 0)
+				goto failure;
+			funlockfile(stream);
+			return 0;
+			break;
+		case SEEK_SET:
+			if (fsetpos(stream, &offset) != 0)
+				return -1;
+			return 0;
+			break;
+		case SEEK_END:
+			flockfile(stream);
+			if (fstat(fileno(stream), &filestat) != 0)
+				goto failure;
+			floc = filestat.st_size;
+			if (fsetpos(stream, &floc) != 0)
+				goto failure;
+			funlockfile(stream);
+			return 0;
+			break;
+		default:
+			errno =	EINVAL;
+			return -1;
+	}
+
+failure:
+	funlockfile(stream);
+	return -1;
+}
+#endif
+
+
+#ifndef HAVE_FTELLO
+off_t
+ftello(FILE *stream)
+{
+	off_t floc;
+
+	if (fgetpos(stream, &floc) != 0)
+		return -1;
+	return floc;
+}
+#endif