libxvid: Separate libxvid encoder from libxvid rate control code.

This allows compiling the Xvid rate control code without the encoder.

1 files changed, 41 insertions, 0 deletions

diff --git a/libavcodec/libxvid_rc.c b/libavcodec/libxvid_rc.c
index c830767058..959edd49b4 100644
--- a/libavcodec/libxvid_rc.c
+++ b/libavcodec/libxvid_rc.c
@@ -20,8 +20,13 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "config.h"
 #include <xvid.h>
 #include <unistd.h>
+#if !HAVE_MKSTEMP
+#include <fcntl.h>
+#endif
+
 #include "avcodec.h"
 #include "libxvid_internal.h"
 //#include "dsputil.h"
@@ -30,6 +35,42 @@
 #undef NDEBUG
 #include <assert.h>
 
+/* 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 */
+}
+
 int ff_xvid_rate_control_init(MpegEncContext *s){
     char *tmp_name;
     int fd, i;