plugins: Don't force 64-bit file/seek functions variants on android

Most functions are automatically chosen from the _FILE_OFFSET_BITS
define, the remaining one (fstat) is only available on API >= 21 so
check for that

plugins/elements/gstfdsink.c

@@ -69,13 +69,11 @@
 #define off_t guint64
 #endif
 
-#ifdef __BIONIC__               /* Android */
-#undef lseek
-#define lseek lseek64
+#if defined(__BIONIC__) /* Android */
+#if defined(__ANDROID_API__) && __ANDROID_API__ >= 21
 #undef fstat
 #define fstat fstat64
-#undef off_t
-#define off_t guint64
+#endif
 #endif
 
 static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",

plugins/elements/gstfdsrc.c

@@ -81,11 +81,11 @@
 #include "gstfdsrc.h"
 
 #ifdef __BIONIC__               /* Android */
-#undef lseek
-#define lseek lseek64
+#if defined(__ANDROID_API__) && __ANDROID_API__ >= 21
 #undef fstat
 #define fstat fstat64
 #endif
+#endif
 
 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,

plugins/elements/gstfilesink.c

@@ -70,13 +70,6 @@
 #include <unistd.h>
 #endif
 
-#ifdef __BIONIC__               /* Android */
-#undef lseek
-#define lseek lseek64
-#undef off_t
-#define off_t guint64
-#endif
-
 #include "gstelements_private.h"
 #include "gstfilesink.h"
 
@@ -401,12 +394,12 @@ gst_file_sink_open_file (GstFileSink * sink)
       sink->buffer = g_malloc (sink->buffer_size);
       buffer_size = sink->buffer_size;
     }
-    /* Cygwin does not have __fbufsize */
-#if defined(HAVE_STDIO_EXT_H) && !defined(__CYGWIN__)
+    /* Cygwin does not have __fbufsize, android adds it in API 23 */
+#if defined(HAVE_STDIO_EXT_H) && (!defined(__CYGWIN__) && (!defined(__ANDROID_API__) || __ANDROID_API__ >= 23))
     GST_DEBUG_OBJECT (sink, "change buffer size %u to %u, mode %d",
         (guint) __fbufsize (sink->file), buffer_size, mode);
 #else
-    GST_DEBUG_OBJECT (sink, "change  buffer size to %u, mode %d",
+    GST_DEBUG_OBJECT (sink, "change buffer size to %u, mode %d",
         sink->buffer_size, mode);
 #endif
     if (setvbuf (sink->file, sink->buffer, mode, buffer_size) != 0) {

plugins/elements/gstfilesrc.c

@@ -66,12 +66,10 @@
 #endif
 
 #ifdef __BIONIC__               /* Android */
-#undef lseek
-#define lseek lseek64
+#if defined(__ANDROID_API__) && __ANDROID_API__ >= 21
 #undef fstat
 #define fstat fstat64
-#undef off_t
-#define off_t guint64
+#endif
 #endif
 
 #include <errno.h>

plugins/elements/gstqueue2.c

@@ -75,10 +75,6 @@
 #endif
 
 #ifdef __BIONIC__               /* Android */
-#undef lseek
-#define lseek lseek64
-#undef off_t
-#define off_t guint64
 #include <fcntl.h>
 #endif
 

plugins/elements/gstsparsefile.c

@@ -36,13 +36,6 @@
 #include <unistd.h>
 #endif
 
-#ifdef __BIONIC__               /* Android */
-#undef lseek
-#define lseek lseek64
-#undef off_t
-#define off_t guint64
-#endif
-
 #ifdef HAVE_FSEEKO
 #define FSEEK_FILE(file,offset)  (fseeko (file, (off_t) offset, SEEK_SET) != 0)
 #elif defined (G_OS_UNIX) || defined (G_OS_WIN32)