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Diffstat (limited to 'libavutil/file.c')
-rw-r--r--libavutil/file.c74
1 files changed, 70 insertions, 4 deletions
diff --git a/libavutil/file.c b/libavutil/file.c
index d2765b8490..45fe8538de 100644
--- a/libavutil/file.c
+++ b/libavutil/file.c
@@ -1,18 +1,18 @@
/*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -136,3 +136,69 @@ void av_file_unmap(uint8_t *bufptr, size_t size)
av_free(bufptr);
#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);
+ av_freep(filename);
+ return err;
+ }
+ return fd; /* success */
+}
+
+#ifdef TEST
+
+#undef printf
+
+int main(void)
+{
+ uint8_t *buf;
+ size_t size;
+ if (av_file_map("file.c", &buf, &size, 0, NULL) < 0)
+ return 1;
+
+ buf[0] = 's';
+ printf("%s", buf);
+ av_file_unmap(buf, size);
+ return 0;
+}
+#endif
+