mp3enc: simplify mp3_write_xing()

[ffmpeg] / libavutil / file.c

diff --git a/libavutil/file.c b/libavutil/file.c
index 31a3b7564f639c86abedc0c7b41cc7e3050f75e0..e59335a77ad39102bdd043a0a626c832900fd27a 100644 (file)
--- a/libavutil/file.c
+++ b/libavutil/file.c
@@ -130,6 +130,52 @@ void av_file_unmap(uint8_t *bufptr, size_t size)
 #endif
 }
 
+int av_tempfile(const char *prefix, char **filename, int log_offset, void *log_ctx) {
+    FileLogContext file_log_ctx = { &file_log_ctx_class, log_offset, log_ctx };
+    int fd=-1;
+#if !HAVE_MKSTEMP
+    void *ptr= tempnam(NULL, prefix);
+    if(!ptr)
+        ptr= tempnam(".", prefix);
+    *filename = av_strdup(ptr);
+#undef free
+    free(ptr);
+#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(&file_log_ctx, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
+        return AVERROR(ENOMEM);
+    }
+#if !HAVE_MKSTEMP
+#   ifndef O_BINARY
+#       define O_BINARY 0
+#   endif
+#   ifndef O_EXCL
+#       define O_EXCL 0
+#   endif
+    fd = open(*filename, O_RDWR | O_BINARY | O_CREAT | O_EXCL, 0600);
+#else
+    snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
+    fd = mkstemp(*filename);
+#ifdef _WIN32
+    if (fd < 0) {
+        snprintf(*filename, len, "./%sXXXXXX", prefix);
+        fd = mkstemp(*filename);
+    }
+#endif
+#endif
+    /* -----common section-----*/
+    if (fd < 0) {
+        int err = AVERROR(errno);
+        av_log(&file_log_ctx, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
+        return err;
+    }
+    return fd; /* success */
+}
+
 #ifdef TEST
 
 #undef printf