TOUCHE: Add generic music functions to wrap MidiPlayer usages.

This is a precursor to adding code within these functions to select
between MIDI and external digital music files.

engines/touche/menu.cpp

@@ -260,7 +260,7 @@ void ToucheEngine::redrawMenu(void *menu) {
 	Graphics::drawRect(_offscreenBuffer, kScreenWidth, 106, 118, 340, 164, 0xF9, 0xF7);
 	switch (menuData->mode) {
 	case kMenuSettingsMode:
-		drawVolumeSlideBar(_offscreenBuffer, kScreenWidth, _midiPlayer->getVolume());
+		drawVolumeSlideBar(_offscreenBuffer, kScreenWidth, getMusicVolume());
 		menuData->buttonsTable[5].data = 0;
 		menuData->buttonsTable[6].data = 0;
 		menuData->buttonsTable[7].data = 0;
@@ -307,10 +307,10 @@ void ToucheEngine::handleMenuAction(void *menu, int actionId) {
 		_talkTextMode = kTalkModeVoiceAndText;
 		break;
 	case kActionLowerVolume:
-		_midiPlayer->adjustVolume(-16);
+		adjustMusicVolume(-16);
 		break;
 	case kActionUpperVolume:
-		_midiPlayer->adjustVolume(+16);
+		adjustMusicVolume(+16);
 		break;
 	case kActionScrollUpSaves:
 		--_saveLoadCurrentPage;

engines/touche/resource.cpp

@@ -610,10 +610,7 @@ void ToucheEngine::res_stopSound() {
 
 void ToucheEngine::res_loadMusic(int num) {
 	debugC(9, kDebugResource, "ToucheEngine::res_loadMusic() num=%d", num);
-	uint32 size;
-	const uint32 offs = res_getDataOffset(kResourceTypeMusic, num, &size);
-	_fData.seek(offs);
-	_midiPlayer->play(_fData, size, true);
+	startMusic(num);
 }
 
 void ToucheEngine::res_loadSpeech(int num) {

engines/touche/touche.cpp

@@ -100,7 +100,7 @@ Common::Error ToucheEngine::run() {
 
 	setupOpcodes();
 
-	_midiPlayer = new MidiPlayer;
+	initMusic();
 
 	// Setup mixer
 	syncSoundSettings();
@@ -120,7 +120,7 @@ Common::Error ToucheEngine::run() {
 }
 
 void ToucheEngine::restart() {
-	_midiPlayer->stop();
+	stopMusic();
 
 	_gameState = kGameStateGameLoop;
 	_displayQuitDialog = false;
@@ -216,7 +216,7 @@ void ToucheEngine::readConfigurationSettings() {
 			_talkTextMode = kTalkModeVoiceOnly;
 		}
 	}
-	_midiPlayer->setVolume(ConfMan.getInt("music_volume"));
+	setMusicVolume(ConfMan.getInt("music_volume"));
 }
 
 void ToucheEngine::writeConfigurationSettings() {
@@ -234,7 +234,7 @@ void ToucheEngine::writeConfigurationSettings() {
 		ConfMan.setBool("subtitles", true);
 		break;
 	}
-	ConfMan.setInt("music_volume", _midiPlayer->getVolume());
+	ConfMan.setInt("music_volume", getMusicVolume());
 	ConfMan.flushToDisk();
 }
 
@@ -3307,4 +3307,31 @@ bool ToucheEngine::canSaveGameStateCurrently() {
 	return _gameState == kGameStateGameLoop && _flagsTable[618] == 0 && !_hideInventoryTexts;
 }
 
+void ToucheEngine::initMusic() {
+	_midiPlayer = new MidiPlayer;
+}
+
+void ToucheEngine::startMusic(int num) {
+	uint32 size;
+	const uint32 offs = res_getDataOffset(kResourceTypeMusic, num, &size);
+	_fData.seek(offs);
+	_midiPlayer->play(_fData, size, true);
+}
+
+void ToucheEngine::stopMusic() {
+	_midiPlayer->stop();
+}
+
+int ToucheEngine::getMusicVolume() {
+	return _midiPlayer->getVolume();
+}
+
+void ToucheEngine::setMusicVolume(int volume) {
+	_midiPlayer->setVolume(volume);
+}
+
+void ToucheEngine::adjustMusicVolume(int diff) {
+	_midiPlayer->adjustVolume(diff);
+}
+
 } // namespace Touche

engines/touche/touche.h

@@ -646,6 +646,13 @@ protected:
 
 	MidiPlayer *_midiPlayer;
 
+	void initMusic();
+	void startMusic(int num);
+	void stopMusic();
+	int getMusicVolume();
+	void setMusicVolume(int volume);
+	void adjustMusicVolume(int diff);
+
 	Common::Language _language;
 	Common::RandomSource _rnd;