KYRA/TOWNS: fix memory leak and some cleanup

svn-id: r52232

4 files changed, 18 insertions, 29 deletions

diff --git a/sound/softsynth/fmtowns_pc98/towns_audio.cpp b/sound/softsynth/fmtowns_pc98/towns_audio.cpp
index bef062b8e6..bbc4891edc 100644
--- a/sound/softsynth/fmtowns_pc98/towns_audio.cpp
+++ b/sound/softsynth/fmtowns_pc98/towns_audio.cpp
@@ -222,19 +222,14 @@ TownsAudioInterface::TownsAudioInterface(Audio::Mixer *mixer, TownsAudioInterfac
 
 	_timerBase = (uint32)(_baserate * 1000000.0f);
 	_tickLength = 2 * _timerBase;
-
-	setTimerCallbackA((ChipTimerProc)&TownsAudioInterface::timerCallbackA);
-	setTimerCallbackB((ChipTimerProc)&TownsAudioInterface::timerCallbackB);
 }
 
 TownsAudioInterface::~TownsAudioInterface() {
 	Common::StackLock lock(_mutex);
 	reset();
+	deinit();
 	_ready = false;
 
-	setTimerCallbackA();
-	setTimerCallbackB();
-
 	delete[] _fmSaveReg[0];
 	delete[] _fmSaveReg[1];
 	delete[] _fmInstruments;
diff --git a/sound/softsynth/fmtowns_pc98/towns_pc98_driver.cpp b/sound/softsynth/fmtowns_pc98/towns_pc98_driver.cpp
index 6d52937cc6..7b7fbddc4b 100644
--- a/sound/softsynth/fmtowns_pc98/towns_pc98_driver.cpp
+++ b/sound/softsynth/fmtowns_pc98/towns_pc98_driver.cpp
@@ -1037,21 +1037,14 @@ TownsPC98_AudioDriver::TownsPC98_AudioDriver(Audio::Mixer *mixer, EmuType type)
 	_musicPlaying(false), _sfxPlaying(false), _fading(false), _looping(0), _ready(false) {
 
 	_sfxOffsets[0] = _sfxOffsets[1] = 0;
-
-	setTimerCallbackA((ChipTimerProc)&TownsPC98_AudioDriver::timerCallbackA);
-	setTimerCallbackB((ChipTimerProc)&TownsPC98_AudioDriver::timerCallbackB);
 }
 
 TownsPC98_AudioDriver::~TownsPC98_AudioDriver() {
 	Common::StackLock lock(_mutex);
-
 	reset();
-
+	deinit();
 	_ready = false;
 
-	setTimerCallbackA();
-	setTimerCallbackB();
-
 	if (_channels) {
 		for (int i = 0; i < _numChan; i++)
 			delete _channels[i];
diff --git a/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp b/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
index e304537c22..b51f695087 100644
--- a/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
+++ b/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
@@ -842,11 +842,9 @@ TownsPC98_FmSynth::TownsPC98_FmSynth(Audio::Mixer *mixer, EmuType type) :
 }
 
 TownsPC98_FmSynth::~TownsPC98_FmSynth() {
-	Common::StackLock lock(_mutex);
-	
-	_ready = false;
+	if (_ready)
+		deinit();
 
-	_mixer->stopHandle(_soundHandle);
 	delete _ssg;
 	delete _prc;
 	delete[] _chanInternal;
@@ -885,6 +883,9 @@ bool TownsPC98_FmSynth::init() {
 		_prc->init(_percussionData);
 	}
 
+	_timers[0].cb = &TownsPC98_FmSynth::timerCallbackA;
+	_timers[1].cb = &TownsPC98_FmSynth::timerCallbackB;
+
 	_mixer->playStream(Audio::Mixer::kPlainSoundType,
 	                   &_soundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true);
 
@@ -1158,12 +1159,11 @@ int TownsPC98_FmSynth::readBuffer(int16 *buffer, const int numSamples) {
 	return numSamples;
 }
 
-void TownsPC98_FmSynth::setTimerCallbackA(ChipTimerProc proc) {
-	_timers[0].cb = proc;
-}
-
-void TownsPC98_FmSynth::setTimerCallbackB(ChipTimerProc proc) {
-	_timers[1].cb = proc;
+void TownsPC98_FmSynth::deinit() {
+	_mixer->stopHandle(_soundHandle);
+	_timers[0].cb = &TownsPC98_FmSynth::idleTimerCallback;
+	_timers[1].cb = &TownsPC98_FmSynth::idleTimerCallback;
+	_ready = false;
 }
 
 uint8 TownsPC98_FmSynth::readSSGStatus() {
diff --git a/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h b/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h
index 4c2de467d7..17bb98482c 100644
--- a/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h
+++ b/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h
@@ -71,9 +71,7 @@ public:
 	}
 
 protected:
-	typedef void (TownsPC98_FmSynth::*ChipTimerProc)();
-	void setTimerCallbackA(ChipTimerProc proc = &TownsPC98_FmSynth::timerCallbackA);
-	void setTimerCallbackB(ChipTimerProc proc = &TownsPC98_FmSynth::timerCallbackB);
+	void deinit();
 
 	// Implement this in your inherited class if your driver generates
 	// additional output that has to be inserted into the buffer.
@@ -84,8 +82,8 @@ protected:
 	}
 	uint8 readSSGStatus();
 
-	virtual void timerCallbackA() {}
-	virtual void timerCallbackB() {}
+	virtual void timerCallbackA() = 0;
+	virtual void timerCallbackB() = 0;
 
 	// The audio driver can store and apply two different audio settings
 	// (usually for music and sound effects). The channel mask will determine
@@ -143,6 +141,9 @@ private:
 
 	bool _regProtectionFlag;
 
+	typedef void (TownsPC98_FmSynth::*ChipTimerProc)();
+	void idleTimerCallback() {};
+
 	struct ChipTimer {
 		bool enabled;
 		uint16 value;