From fe863c3e3238ee48cc0c0046aee3096078bb1ed5 Mon Sep 17 00:00:00 2001
From: Johannes Schultz <sagamusix@openmpt.org>
Date: Mon, 8 Apr 2024 18:12:42 +0000
Subject: [PATCH] Merged revision(s) 20529 from trunk/OpenMPT: [Imp] MED:
 Improve handling of default tempo, panning and channel volume in files
 containing more than one song (fixes sugar n spice.mmd3,
 https://www.un4seen.com/forum/?topic=15448.msg142659#msg142659) ........

git-svn-id: https://source.openmpt.org/svn/openmpt/branches/OpenMPT-1.31@20530 56274372-70c3-4bfc-bfc3-4c3a0b034d27
---
 soundlib/Load_med.cpp | 30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

diff --git a/soundlib/Load_med.cpp b/soundlib/Load_med.cpp
index 3305f4ab50f..a51ed958fb2 100644
--- a/soundlib/Load_med.cpp
+++ b/soundlib/Load_med.cpp
@@ -1197,12 +1197,15 @@ bool CSoundFile::ReadMED(FileReader &file, ModLoadingFlags loadFlags)
 		const bool is8Ch = (songHeader.flags & MMDSong::FLAG_8CHANNEL) != 0;
 		const bool bpmMode = (songHeader.flags2 & MMDSong::FLAG2_BPM) != 0;
 		const uint8 rowsPerBeat = 1 + (songHeader.flags2 & MMDSong::FLAG2_BMASK);
-		m_nDefaultTempo = MMDTempoToBPM(songHeader.defaultTempo, is8Ch, bpmMode, rowsPerBeat);
-		m_nDefaultSpeed = Clamp<uint8, uint8>(songHeader.tempo2, 1, 32);
-		if(bpmMode)
+		if(song == 0)
 		{
-			m_nDefaultRowsPerBeat = rowsPerBeat;
-			m_nDefaultRowsPerMeasure = m_nDefaultRowsPerBeat * 4u;
+			m_nDefaultTempo = MMDTempoToBPM(songHeader.defaultTempo, is8Ch, bpmMode, rowsPerBeat);
+			m_nDefaultSpeed = Clamp<uint8, uint8>(songHeader.tempo2, 1, 32);
+			if(bpmMode)
+			{
+				m_nDefaultRowsPerBeat = rowsPerBeat;
+				m_nDefaultRowsPerMeasure = m_nDefaultRowsPerBeat * 4u;
+			}
 		}
 
 		if(songHeader.masterVol)
@@ -1422,7 +1425,7 @@ bool CSoundFile::ReadMED(FileReader &file, ModLoadingFlags loadFlags)
 		}
 
 		// Fix jump order commands
-		for(const auto & [from, to] : jumpTargets)
+		for(const auto &[from, to] : jumpTargets)
 		{
 			PATTERNINDEX pat;
 			if(from > 0 && order.IsValidPat(from - 1))
@@ -1442,6 +1445,21 @@ bool CSoundFile::ReadMED(FileReader &file, ModLoadingFlags loadFlags)
 				numPatterns = pat + 1;
 		}
 
+		if(numSongs > 1)
+		{
+			PATTERNINDEX firstPat = order.EnsureUnique(0);
+			if(firstPat != PATTERNINDEX_INVALID)
+			{
+				for(CHANNELINDEX chn = 0; chn < m_nChannels; chn++)
+				{
+					Patterns[firstPat].WriteEffect(EffectWriter(CMD_CHANNELVOLUME, ChnSettings[chn].nVolume).Channel(chn).RetryNextRow());
+					Patterns[firstPat].WriteEffect(EffectWriter(CMD_PANNING8, mpt::saturate_cast<ModCommand::PARAM>(ChnSettings[chn].nPan)).Channel(chn).RetryNextRow());
+				}
+				if(firstPat >= numPatterns)
+					numPatterns = firstPat + 1;
+			}
+		}
+
 		basePattern += numPatterns;
 		
 		if(!expData.nextModOffset || !file.Seek(expData.nextModOffset))