CrossFade: pass total_time as SignedSongTime instance

src/CrossFade.cxx

@@ -19,6 +19,7 @@
 
 #include "config.h"
 #include "CrossFade.hxx"
+#include "Chrono.hxx"
 #include "MusicChunk.hxx"
 #include "AudioFormat.hxx"
 #include "util/NumberParser.hxx"
@@ -85,7 +86,7 @@ mixramp_interpolate(const char *ramp_list, float required_db)
 }
 
 unsigned
-CrossFadeSettings::Calculate(float total_time,
+CrossFadeSettings::Calculate(SignedSongTime total_time,
 			     float replay_gain_db, float replay_gain_prev_db,
 			     const char *mixramp_start, const char *mixramp_prev_end,
 			     const AudioFormat af,
@@ -95,7 +96,8 @@ CrossFadeSettings::Calculate(float total_time,
 	unsigned int chunks = 0;
 	float chunks_f;
 
-	if (duration < 0 || duration >= total_time ||
+	if (total_time.IsNegative() ||
+	    duration < 0 || duration >= total_time.ToDoubleS() ||
 	    /* we can't crossfade when the audio formats are different */
 	    af != old_format)
 		return 0;

src/CrossFade.hxx

@@ -23,6 +23,7 @@
 #include "Compiler.h"
 
 struct AudioFormat;
+class SignedSongTime;
 
 struct CrossFadeSettings {
 	/**
@@ -60,7 +61,7 @@ struct CrossFadeSettings {
 	 * should be disabled for this song change
 	 */
 	gcc_pure
-	unsigned Calculate(float total_time,
+	unsigned Calculate(SignedSongTime total_time,
 			   float replay_gain_db, float replay_gain_prev_db,
 			   const char *mixramp_start,
 			   const char *mixramp_prev_end,

src/PlayerThread.cxx

@@ -1001,7 +1001,7 @@ Player::Run()
 			   calculate how many chunks will be required
 			   for it */
 			cross_fade_chunks =
-				pc.cross_fade.Calculate(dc.total_time.ToDoubleS(),
+				pc.cross_fade.Calculate(dc.total_time,
 							dc.replay_gain_db,
 							dc.replay_gain_prev_db,
 							dc.GetMixRampStart(),