modified doSong so you can start a new Song without killing running macros

svn-id: r41693

2 files changed, 17 insertions, 8 deletions

diff --git a/sound/mods/tfmx.cpp b/sound/mods/tfmx.cpp
index 60c2833f45..da91fe43a9 100644
--- a/sound/mods/tfmx.cpp
+++ b/sound/mods/tfmx.cpp
@@ -890,11 +890,20 @@ void Tfmx::doMacro(int note, int macro, int relVol, int finetune, int channelNo)
 	startPaula();
 }
 
-void Tfmx::doSong(int songPos) {
+void Tfmx::stopSong(bool stopAudio) {
+	Common::StackLock lock(_mutex);
+	_playerCtx.song = -1;
+	if (stopAudio)
+		stopMacroChannels();
+}
+
+void Tfmx::doSong(int songPos, bool stopAudio) {
 	assert(0 <= songPos && songPos < kNumSubsongs);
 	Common::StackLock lock(_mutex);
-	// bool stopCurSong = false;
-	int prevSong = _playerCtx.song;
+
+	stopPatternChannels();
+	if (stopAudio)
+		stopMacroChannels();
 
 	_playerCtx.song = (int8)songPos;
 
@@ -902,20 +911,18 @@ void Tfmx::doSong(int songPos) {
 	_trackCtx.startInd = _trackCtx.posInd = _subsong[songPos].songstart;
 	_trackCtx.stopInd = _subsong[songPos].songend;
 
+	const bool palFlag = (_resource.headerFlags & 2);
 	const uint16 tempo = _subsong[songPos].tempo;
 	uint16 ciaIntervall;
 	if (tempo >= 0x10) {
 		ciaIntervall = (uint16)(kCiaBaseInterval / tempo);
 		_playerCtx.patternSkip = 0;
 	} else {
-		ciaIntervall = kPalDefaultCiaVal;
+		ciaIntervall = palFlag ? kPalDefaultCiaVal : kNtscDefaultCiaVal;
 		_playerCtx.patternSkip = tempo;
 	}
-	setTimerBaseValue(kPalCiaClock);
 	setInterruptFreqUnscaled(ciaIntervall);
 
-	stopPatternChannels();
-	stopMacroChannels();
 	_playerCtx.patternCount = 0;
 	while (trackStep())
 		;
diff --git a/sound/mods/tfmx.h b/sound/mods/tfmx.h
index aa89361da8..5ca6f3cbda 100644
--- a/sound/mods/tfmx.h
+++ b/sound/mods/tfmx.h
@@ -46,7 +46,8 @@ public:
 	virtual ~Tfmx();
 
 	void interrupt();
-	void doSong(int songPos);
+	void stopSong(bool stopAudio = true);
+	void doSong(int songPos, bool stopAudio = false);
 	void doSfx(int sfxIndex);
 	void doMacro(int note, int macro, int relVol = 0, int finetune = 0, int channelNo = 0);
 	bool load(Common::SeekableReadStream &musicData, Common::SeekableReadStream &sampleData);
@@ -261,6 +262,7 @@ public:
 			unlockMacroChannel(_channelCtx[i]);
 			clearMacroProgramm(_channelCtx[i]);
 			_channelCtx[i].note = 0;
+			_channelCtx[i].volume = 0;
 		}
 	}