Restore digests for content.

[dcpomatic.git] / src / lib / playlist.cc

diff --git a/src/lib/playlist.cc b/src/lib/playlist.cc
index f346cb6e03d0377eb9403d0d29cbc0a4f1835434..58086d02b67cd3e57b3526d878829f71196f8fb9 100644 (file)
--- a/src/lib/playlist.cc
+++ b/src/lib/playlist.cc
@@ -18,6 +18,7 @@
 */
 
 #include <boost/shared_ptr.hpp>
+#include <boost/lexical_cast.hpp>
 #include "playlist.h"
 #include "sndfile_content.h"
 #include "sndfile_decoder.h"
@@ -32,9 +33,11 @@ using std::cout;
 using std::vector;
 using std::min;
 using std::max;
+using std::string;
 using boost::shared_ptr;
 using boost::weak_ptr;
 using boost::dynamic_pointer_cast;
+using boost::lexical_cast;
 
 Playlist::Playlist ()
        : _audio_from (AUDIO_FFMPEG)
@@ -251,3 +254,44 @@ Playlist::default_audio_mapping () const
 
        return m;
 }
+
+string
+Playlist::audio_digest () const
+{
+       string t;
+       
+       switch (_audio_from) {
+       case AUDIO_FFMPEG:
+               for (list<shared_ptr<const VideoContent> >::const_iterator i = _video.begin(); i != _video.end(); ++i) {
+                       shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
+                       if (fc) {
+                               t += (*i)->digest ();
+                               t += lexical_cast<string> (fc->audio_stream()->id);
+                       }
+               }
+               break;
+       case AUDIO_SNDFILE:
+               for (list<shared_ptr<const SndfileContent> >::const_iterator i = _sndfile.begin(); i != _sndfile.end(); ++i) {
+                       t += (*i)->digest ();
+               }
+               break;
+       }
+
+       return md5_digest (t.c_str(), t.length());
+}
+
+string
+Playlist::video_digest () const
+{
+       string t;
+       
+       for (list<shared_ptr<const VideoContent> >::const_iterator i = _video.begin(); i != _video.end(); ++i) {
+               t += (*i)->digest ();
+               shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
+               if (fc) {
+                       t += fc->subtitle_stream()->id;
+               }
+       }
+
+       return md5_digest (t.c_str(), t.length());
+}