KYRA/TOWNS: implement music/sfx volume control via GUI/GMM

svn-id: r51695

5 files changed, 62 insertions, 7 deletions

diff --git a/sound/softsynth/fmtowns_pc98/towns_audio.cpp b/sound/softsynth/fmtowns_pc98/towns_audio.cpp
index 3d3427fcfb..683f574f65 100644
--- a/sound/softsynth/fmtowns_pc98/towns_audio.cpp
+++ b/sound/softsynth/fmtowns_pc98/towns_audio.cpp
@@ -101,7 +101,8 @@ private:
 
 TownsAudioInterface::TownsAudioInterface(Audio::Mixer *mixer, TownsAudioInterfacePluginDriver *driver) : TownsPC98_FmSynth(mixer, kTypeTowns),
 	_fmInstruments(0), _pcmInstruments(0), _pcmChan(0), _waveTables(0), _waveTablesTotalDataSize(0),
-	_baserate(55125.0f / (float)mixer->getOutputRate()), _tickLength(0), _timer(0), _drv(driver), _ready(false) {
+	_baserate(55125.0f / (float)mixer->getOutputRate()), _tickLength(0), _timer(0), _drv(driver),
+	_musicVolume(256), _sfxVolume(256), _pcmSfxChanMask(0), _ready(false) {
 
 #define INTCB(x) &TownsAudioInterface::intf_##x
 	static const TownsAudioIntfCallback intfCb[] = {
@@ -247,6 +248,8 @@ bool TownsAudioInterface::init() {
 
 	_timer = 0;
 
+	setVolumeChannelMasks(-1, 0);
+
 	callback(0);
 
 	_ready = true;
@@ -269,6 +272,22 @@ int TownsAudioInterface::callback(int command, ...) {
 	return res;
 }
 
+void TownsAudioInterface::setMusicVolume(int volume) {
+	_musicVolume = CLIP<uint16>(volume, 0, Audio::Mixer::kMaxMixerVolume);
+	setVolumeIntern(_musicVolume, _sfxVolume);
+}
+
+void TownsAudioInterface::setSoundEffectVolume(int volume) {
+	_sfxVolume = CLIP<uint16>(volume, 0, Audio::Mixer::kMaxMixerVolume);
+	setVolumeIntern(_musicVolume, _sfxVolume);
+}
+
+void TownsAudioInterface::setSoundEffectChanMask(uint32 mask) {
+	_pcmSfxChanMask = mask >> 6;
+	mask &= 0x3f;
+	setVolumeChannelMasks(~mask, mask);
+}
+
 void TownsAudioInterface::nextTickEx(int32 *buffer, uint32 bufferSize) {
 	if (!_ready)
 		return;
@@ -302,6 +321,10 @@ void TownsAudioInterface::nextTickEx(int32 *buffer, uint32 bufferSize) {
 		for (int ii = 0; ii < 8; ii++) {
 			if (_pcmChanOut & _chanFlags[ii]) {
 				int32 o = _pcmChan[ii].data[_pcmChan[ii].pos >> 11] * _pcmChan[ii].velo;
+				if ((1 << ii) & (~_pcmSfxChanMask))
+					o = (o * _musicVolume) / Audio::Mixer::kMaxMixerVolume;
+				if ((1 << ii) & _pcmSfxChanMask)
+					o = (o * _sfxVolume) / Audio::Mixer::kMaxMixerVolume;
 				if (_pcmChan[ii].panLeft)
 					finOutL += ((o * _pcmChan[ii].panLeft) >> 3);
 				if (_pcmChan[ii].panRight)
diff --git a/sound/softsynth/fmtowns_pc98/towns_audio.h b/sound/softsynth/fmtowns_pc98/towns_audio.h
index 93a9198fe4..707c9e6bd4 100644
--- a/sound/softsynth/fmtowns_pc98/towns_audio.h
+++ b/sound/softsynth/fmtowns_pc98/towns_audio.h
@@ -46,6 +46,12 @@ public:
 
 	int callback(int command, ...);
 
+	void setMusicVolume(int volume);
+	void setSoundEffectVolume(int volume);
+	// Defines the channels used as sound effect channels for the purpose of ScummVM GUI volume control.
+	// The first 6 bits are the 6 fm channels. The next 8 bits are pcm channels.
+	void setSoundEffectChanMask(uint32 mask);
+
 private:
 	void nextTickEx(int32 *buffer, uint32 bufferSize);
 
@@ -148,6 +154,10 @@ private:
 	uint32 _tickLength;
 	uint32 _timer;
 
+	uint16 _musicVolume;
+	uint16 _sfxVolume;
+	uint32 _pcmSfxChanMask;
+
 	TownsAudioInterfacePluginDriver *_drv;
 	bool _ready;
 
diff --git a/sound/softsynth/fmtowns_pc98/towns_euphony.cpp b/sound/softsynth/fmtowns_pc98/towns_euphony.cpp
index 4fe645e2fc..13120df17a 100644
--- a/sound/softsynth/fmtowns_pc98/towns_euphony.cpp
+++ b/sound/softsynth/fmtowns_pc98/towns_euphony.cpp
@@ -130,8 +130,19 @@ void TownsEuphonyDriver::unloadWaveTable(int id) {
 	_intf->callback(35, id);
 }
 
-void TownsEuphonyDriver::reserveSfxChannels(int num) {
+void TownsEuphonyDriver::reserveSoundEffectChannels(int num) {
 	_intf->callback(33, num);
+	uint32 volMask = 0;
+	
+	if (num > 8)
+		return;
+
+	for (uint32 v = 1 << 13; num; num--) {
+		volMask |= v;
+		v >>= 1;
+	}
+	
+	_intf->setSoundEffectChanMask(volMask);
 }
 
 int TownsEuphonyDriver::setMusicTempo(int tempo) {
@@ -289,6 +300,14 @@ void TownsEuphonyDriver::timerCallback(int timerId) {
 	}
 }
 
+void TownsEuphonyDriver::setMusicVolume(int volume) {
+	_intf->setMusicVolume(volume);
+}
+
+void TownsEuphonyDriver::setSoundEffectVolume(int volume) {
+	_intf->setSoundEffectVolume(volume);
+}
+
 void TownsEuphonyDriver::resetTables() {
 	memset(_tEnable, 0xff, 32);
 	memset(_tMode, 0xff, 16);
diff --git a/sound/softsynth/fmtowns_pc98/towns_euphony.h b/sound/softsynth/fmtowns_pc98/towns_euphony.h
index c869b612a3..47cfdcb2b9 100644
--- a/sound/softsynth/fmtowns_pc98/towns_euphony.h
+++ b/sound/softsynth/fmtowns_pc98/towns_euphony.h
@@ -39,7 +39,7 @@ public:
 	void loadInstrument(int chanType, int id, const uint8 *data);
 	void loadWaveTable(const uint8 *data);
 	void unloadWaveTable(int id);
-	void reserveSfxChannels(int num);
+	void reserveSoundEffectChannels(int num);
 
 	int setMusicTempo(int tempo);
 	int startMusicTrack(const uint8 *data, int trackSize, int startTick);
@@ -66,6 +66,9 @@ public:
 
 	void timerCallback(int timerId);
 
+	void setMusicVolume(int volume);
+	void setSoundEffectVolume(int volume);
+
 	TownsAudioInterface *intf() {
 		return _intf;
 	}
diff --git a/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp b/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
index 7a91cb81b9..507c8e159a 100644
--- a/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
+++ b/sound/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp
@@ -1157,12 +1157,12 @@ uint8 TownsPC98_FmSynth::readSSGStatus() {
 
 void TownsPC98_FmSynth::setVolumeIntern(int volA, int volB) {
 	Common::StackLock lock(_mutex);
-	_volumeA = volA;
-	_volumeB = volB;
+	_volumeA = CLIP<uint16>(volA, 0, Audio::Mixer::kMaxMixerVolume);
+	_volumeB = CLIP<uint16>(volB, 0, Audio::Mixer::kMaxMixerVolume);
 	if (_ssg)
-		_ssg->setVolumeIntern(volA, volB);
+		_ssg->setVolumeIntern(_volumeA, _volumeB);
 	if (_prc)
-		_prc->setVolumeIntern(volA, volB);
+		_prc->setVolumeIntern(_volumeA, _volumeB);
 }
 
 void TownsPC98_FmSynth::setVolumeChannelMasks(int channelMaskA, int channelMaskB) {