X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=afh_common.c;h=7947a66519f8dba3784257bcce6669942d4fa9ad;hp=08bcde90697ec251c50ebd58abaf5f7ddf3ecff0;hb=5e12f77a5b2a76c8a6f19a96958e0992962573db;hpb=1a8e3628040a94a8c06027335962a6cb2f827a63

diff --git a/afh_common.c b/afh_common.c
index 08bcde90..7947a665 100644
--- a/afh_common.c
+++ b/afh_common.c
@@ -392,3 +392,31 @@ unsigned afh_get_afhi_txt(int audio_format_num, struct afh_info *afhi, char **re
 		status_item_list[SI_COMMENT], afhi->tags.comment? afhi->tags.comment : ""
 	);
 }
+
+/**
+ * Create a copy of the given file with altered meta tags.
+ *
+ * \param audio_format_id Specifies the audio format.
+ * \param map The (read-only) memory map of the input file.
+ * \param mapsize The size of the input file in bytes.
+ * \param tags The new tags.
+ * \param output_fd Altered file is created using this file descriptor.
+ * \param filename The name of the temporary output file.
+ *
+ * This calls the ->rewrite_tags method of the audio format handler associated
+ * with \a audio_format_id to create a copy of the memory-mapped file given
+ * by \a map and \a mapsize, but with altered tags according to \a tags. If
+ * the audio format handler for \a audio_format_id lacks this optional method,
+ * the function returns (the paraslash error code of) \p ENOTSUP.
+ *
+ * \return Standard.
+ */
+int afh_rewrite_tags(int audio_format_id, void *map, size_t mapsize,
+		struct taginfo *tags, int output_fd, const char *filename)
+{
+	struct audio_format_handler *afh = afl + audio_format_id;
+
+	if (!afh->rewrite_tags)
+		return -ERRNO_TO_PARA_ERROR(ENOTSUP);
+	return afh->rewrite_tags(map, mapsize, tags, output_fd, filename);
+}