db/LightSong: use std::chrono::duration for start_ms and end_ms

src/db/LightSong.cxx

@@ -23,11 +23,11 @@
 double
 LightSong::GetDuration() const
 {
-	if (end_ms > 0)
-		return (end_ms - start_ms) / 1000.0;
+	if (end_time.IsPositive())
+		return (end_time - start_time).ToDoubleS();
 
 	if (tag->time <= 0)
 		return 0;
 
-	return tag->time - start_ms / 1000.0;
+	return tag->time - start_time.ToDoubleS();
 }

src/db/LightSong.hxx

@@ -20,6 +20,7 @@
 #ifndef MPD_LIGHT_SONG_HXX
 #define MPD_LIGHT_SONG_HXX
 
+#include "Chrono.hxx"
 #include "Compiler.h"
 
 #include <string>
@@ -64,15 +65,15 @@ struct LightSong {
 	time_t mtime;
 
 	/**
-	 * Start of this sub-song within the file in milliseconds.
+	 * Start of this sub-song within the file.
 	 */
-	unsigned start_ms;
+	SongTime start_time;
 
 	/**
-	 * End of this sub-song within the file in milliseconds.
+	 * End of this sub-song within the file.
 	 * Unused if zero.
 	 */
-	unsigned end_ms;
+	SongTime end_time;
 
 	gcc_pure
 	std::string GetURI() const {

src/db/plugins/ProxyDatabasePlugin.cxx

@@ -192,10 +192,10 @@ ProxySong::ProxySong(const mpd_song *song)
 	mtime = mpd_song_get_last_modified(song);
 
 #if LIBMPDCLIENT_CHECK_VERSION(2,3,0)
-	start_ms = mpd_song_get_start(song) * 1000;
-	end_ms = mpd_song_get_end(song) * 1000;
+	start_time = SongTime::FromS(mpd_song_get_start(song));
+	end_time = SongTime::FromS(mpd_song_get_end(song));
 #else
-	start_ms = end_ms = 0;
+	start_time = end_time = SongTime::zero();
 #endif
 
 	TagBuilder tag_builder;

src/db/plugins/simple/Song.cxx

@@ -105,7 +105,7 @@ Song::Export() const
 	dest.real_uri = nullptr;
 	dest.tag = &tag;
 	dest.mtime = mtime;
-	dest.start_ms = start_ms;
-	dest.end_ms = end_ms;
+	dest.start_time = SongTime::FromMS(start_ms);
+	dest.end_time = SongTime::FromMS(end_ms);
 	return dest;
 }

src/db/plugins/upnp/UpnpDatabasePlugin.cxx

@@ -66,7 +66,7 @@ public:
 		real_uri = real_uri2.c_str();
 		tag = &tag2;
 		mtime = 0;
-		start_ms = end_ms = 0;
+		start_time = end_time = SongTime::zero();
 	}
 };
 
@@ -360,7 +360,7 @@ visitSong(const UPnPDirObject &meta, const char *path,
 	song.real_uri = meta.url.c_str();
 	song.tag = &meta.tag;
 	song.mtime = 0;
-	song.start_ms = song.end_ms = 0;
+	song.start_time = song.end_time = SongTime::zero();
 
 	return !selection.Match(song) || visit_song(song, error);
 }