Move av_tempfile() into libavutil, it is a generically usefull thing and its small.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/libxvid_rc.c

@@ -22,6 +22,7 @@
 
 #include <xvid.h>
 #include <unistd.h>
+#include "libavutil/file.h"
 #include "avcodec.h"
 #include "libxvid_internal.h"
 //#include "dsputil.h"
@@ -40,7 +41,7 @@ int ff_xvid_rate_control_init(MpegEncContext *s){
 
 //xvid_debug=-1;
 
-    fd=ff_tempfile("xvidrc.", &tmp_name);
+    fd=av_tempfile("xvidrc.", &tmp_name);
     if (fd == -1) {
         av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n");
         return -1;

libavcodec/libxvidff.c

@@ -28,13 +28,11 @@
 #include <xvid.h>
 #include <unistd.h>
 #include "avcodec.h"
+#include "libavutil/file.h"
 #include "libavutil/cpu.h"
 #include "libavutil/intreadwrite.h"
 #include "libavutil/mathematics.h"
 #include "libxvid_internal.h"
-#if !HAVE_MKSTEMP
-#include <fcntl.h>
-#endif
 
 /**
  * Buffer management macros.
@@ -77,42 +75,6 @@ int xvid_strip_vol_header(AVCodecContext *avctx, unsigned char *frame, unsigned
 int xvid_ff_2pass(void *ref, int opt, void *p1, void *p2);
 void xvid_correct_framerate(AVCodecContext *avctx);
 
-/* Wrapper to work around the lack of mkstemp() on mingw.
- * Also, tries to create file in /tmp first, if possible.
- * *prefix can be a character constant; *filename will be allocated internally.
- * @return file descriptor of opened file (or -1 on error)
- * and opened file name in **filename. */
-int ff_tempfile(const char *prefix, char **filename) {
-    int fd=-1;
-#if !HAVE_MKSTEMP
-    *filename = tempnam(".", prefix);
-#else
-    size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
-    *filename = av_malloc(len);
-#endif
-    /* -----common section-----*/
-    if (*filename == NULL) {
-        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
-        return -1;
-    }
-#if !HAVE_MKSTEMP
-    fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
-#else
-    snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
-    fd = mkstemp(*filename);
-    if (fd < 0) {
-        snprintf(*filename, len, "./%sXXXXXX", prefix);
-        fd = mkstemp(*filename);
-    }
-#endif
-    /* -----common section-----*/
-    if (fd < 0) {
-        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
-        return -1;
-    }
-    return fd; /* success */
-}
-
 #if CONFIG_LIBXVID_ENCODER
 
 /**
@@ -270,7 +232,7 @@ static av_cold int xvid_encode_init(AVCodecContext *avctx)  {
         rc2pass2.version = XVID_VERSION;
         rc2pass2.bitrate = avctx->bit_rate;
 
-        fd = ff_tempfile("xvidff.", &(x->twopassfile));
+        fd = av_tempfile("xvidff.", &(x->twopassfile));
         if( fd == -1 ) {
             av_log(avctx, AV_LOG_ERROR,
                 "Xvid: Cannot write 2-pass pipe\n");

libavutil/file.c

@@ -130,6 +130,37 @@ void av_file_unmap(uint8_t *bufptr, size_t size)
 #endif
 }
 
+int av_tempfile(const char *prefix, char **filename) {
+    int fd=-1;
+#if !HAVE_MKSTEMP
+    *filename = tempnam(".", prefix);
+#else
+    size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
+    *filename = av_malloc(len);
+#endif
+    /* -----common section-----*/
+    if (*filename == NULL) {
+        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
+        return -1;
+    }
+#if !HAVE_MKSTEMP
+    fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
+#else
+    snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
+    fd = mkstemp(*filename);
+    if (fd < 0) {
+        snprintf(*filename, len, "./%sXXXXXX", prefix);
+        fd = mkstemp(*filename);
+    }
+#endif
+    /* -----common section-----*/
+    if (fd < 0) {
+        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
+        return -1;
+    }
+    return fd; /* success */
+}
+
 #ifdef TEST
 
 #undef printf

libavutil/file.h

@@ -49,4 +49,13 @@ int av_file_map(const char *filename, uint8_t **bufptr, size_t *size,
  */
 void av_file_unmap(uint8_t *bufptr, size_t size);
 
+/**
+ * Wrapper to work around the lack of mkstemp() on mingw.
+ * Also, tries to create file in /tmp first, if possible.
+ * *prefix can be a character constant; *filename will be allocated internally.
+ * @return file descriptor of opened file (or -1 on error)
+ * and opened file name in **filename.
+ */
+int av_tempfile(const char *prefix, char **filename);
+
 #endif /* AVUTIL_FILE_H */