avformat/avio: fix ff_rename to respect used protocol

Also simplify it and make it always log the error.

This fixes for example the image2 muxer when used with an URL which also
contains the protocol:

ffmpeg -f lavfi -i testsrc -vframes 10 -atomic_writing 1 file:out%d.png
Signed-off-by: Marton Balint <cus@passwd.hu>

libavformat/avio.c

@@ -667,16 +667,10 @@ int ff_check_interrupt(AVIOInterruptCB *cb)
     return 0;
 }
 
-int ff_rename(const char *oldpath, const char *newpath, void *logctx)
+int ff_rename(const char *url_src, const char *url_dst, void *logctx)
 {
-    int ret = 0;
-    if (rename(oldpath, newpath) == -1) {
-        ret = AVERROR(errno);
-        if (logctx) {
-            char err[AV_ERROR_MAX_STRING_SIZE] = {0};
-            av_make_error_string(err, AV_ERROR_MAX_STRING_SIZE, ret);
-            av_log(logctx, AV_LOG_ERROR, "failed to rename file %s to %s: %s\n", oldpath, newpath, err);
-        }
-    }
+    int ret = avpriv_io_move(url_src, url_dst);
+    if (ret < 0)
+        av_log(logctx, AV_LOG_ERROR, "failed to rename file %s to %s: %s\n", url_src, url_dst, av_err2str(ret));
     return ret;
 }

libavformat/internal.h

@@ -580,13 +580,13 @@ int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *a
 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src);
 
 /**
- * Wrap errno on rename() error.
+ * Wrap avpriv_io_move and log if error happens.
  *
- * @param oldpath source path
- * @param newpath destination path
+ * @param url_src source path
+ * @param url_dst destination path
  * @return        0 or AVERROR on failure
  */
-int ff_rename(const char *oldpath, const char *newpath, void *logctx);
+int ff_rename(const char *url_src, const char *url_dst, void *logctx);
 
 /**
  * Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end