Extract simple_digest().

3 files changed, 10 insertions, 5 deletions

diff --git a/src/lib/content.cc b/src/lib/content.cc
index 5b5f0753c..2292c1f9d 100644
--- a/src/lib/content.cc
+++ b/src/lib/content.cc
@@ -169,15 +169,11 @@ Content::as_xml (xmlpp::Node* node, bool with_paths) const
 string
 Content::calculate_digest () const
 {
-	boost::mutex::scoped_lock lm (_mutex);
-	auto p = _paths;
-	lm.unlock ();
-
 	/* Some content files are very big, so we use a poor man's
 	   digest here: a digest of the first and last 1e6 bytes with the
 	   size of the first file tacked on the end as a string.
 	*/
-	return digest_head_tail(p, 1000000) + raw_convert<string>(boost::filesystem::file_size(p.front()));
+	return simple_digest (paths());
 }
 
 
diff --git a/src/lib/util.cc b/src/lib/util.cc
index c165a5129..64fdd6a37 100644
--- a/src/lib/util.cc
+++ b/src/lib/util.cc
@@ -529,6 +529,14 @@ digest_head_tail (vector<boost::filesystem::path> files, boost::uintmax_t size)
 	return digester.get ();
 }
 
+
+string
+simple_digest (vector<boost::filesystem::path> paths)
+{
+	return digest_head_tail(paths, 1000000) + raw_convert<string>(boost::filesystem::file_size(paths.front()));
+}
+
+
 /** Round a number up to the nearest multiple of another number.
  *  @param c Index.
  *  @param stride Array of numbers to round, indexed by c.
diff --git a/src/lib/util.h b/src/lib/util.h
index 10c5678ff..1296dc789 100644
--- a/src/lib/util.h
+++ b/src/lib/util.h
@@ -94,6 +94,7 @@ extern void dcpomatic_setup ();
 extern void dcpomatic_setup_path_encoding ();
 extern void dcpomatic_setup_gettext_i18n (std::string);
 extern std::string digest_head_tail (std::vector<boost::filesystem::path>, boost::uintmax_t size);
+extern std::string simple_digest (std::vector<boost::filesystem::path> paths);
 extern void ensure_ui_thread ();
 extern std::string audio_channel_name (int);
 extern std::string short_audio_channel_name (int);