Applied a modified version of patch #2881486 - "Add volume changing to SCI"

svn-id: r45329

6 files changed, 41 insertions, 14 deletions

diff --git a/engines/sci/sfx/core.cpp b/engines/sci/sfx/core.cpp
index fe044e98ac..01177837b2 100644
--- a/engines/sci/sfx/core.cpp
+++ b/engines/sci/sfx/core.cpp
@@ -133,6 +133,10 @@ public:
 	 * @param argv	the buffer itself
 	 */
 	void tell_synth(int buf_nr, byte *buf);
+
+	void setVolume(int vol);
+
+	int getVolume(void);
 };
 
 SfxPlayer::SfxPlayer() {
@@ -316,6 +320,13 @@ Common::Error SfxPlayer::resume() {
 	return Common::kNoError;
 }
 
+void SfxPlayer::setVolume(int vol) {
+	_mididrv->setVolume(vol);
+}
+
+int SfxPlayer::getVolume(void) {
+	return _mididrv->getVolume();
+}
 
 #pragma mark -
 
@@ -985,13 +996,12 @@ Common::Error SfxState::sfx_send_midi(SongHandle handle, int channel,
 	return Common::kNoError;
 }
 
-int SfxState::sfx_get_volume() {
-	warning("FIXME: Implement volume");
-	return 0;
+int SfxState::sfx_getVolume() {
+	return _player->getVolume();
 }
 
-void SfxState::sfx_set_volume(int volume) {
-	warning("FIXME: Implement volume");
+void SfxState::sfx_setVolume(int volume) {
+	_player->setVolume(volume);
 }
 
 void SfxState::sfx_all_stop() {
diff --git a/engines/sci/sfx/core.h b/engines/sci/sfx/core.h
index 0a80d1fe1a..1cb6540e8e 100644
--- a/engines/sci/sfx/core.h
+++ b/engines/sci/sfx/core.h
@@ -97,12 +97,12 @@ public:
 	/* Determines the current global volume settings
 	** Returns   : (int) The global volume, between 0 (silent) and 127 (max. volume)
 	*/
-	int sfx_get_volume();
+	int sfx_getVolume();
 
 	/* Determines the current global volume settings
 	** Parameters: (int) volume: The new global volume, between 0 and 127 (see above)
 	*/
-	void sfx_set_volume(int volume);
+	void sfx_setVolume(int volume);
 
 	/* Stops all songs currently playing, purges song library
 	*/
diff --git a/engines/sci/sfx/sci_midi.h b/engines/sci/sfx/sci_midi.h
index 9facca27b8..623dbd9f33 100644
--- a/engines/sci/sfx/sci_midi.h
+++ b/engines/sci/sfx/sci_midi.h
@@ -35,7 +35,8 @@ namespace Sci {
 class ResourceManager;
 
 enum {
-	MIDI_CHANNELS = 16
+	MIDI_CHANNELS = 16,
+	MIDI_PROP_MASTER_VOLUME = 0
 };
 
 
@@ -80,12 +81,14 @@ public:
 	virtual int getPolyphony() const = 0;
 
 	virtual void setVolume(byte volume) {
-		// Master Volume SysEx message
-		const byte message[] = {0x7f, 0x7f, 0x04, 0x01, (volume * 127 / 15) & 0x7f, (volume * 127 / 15) & 0x7f};
-
-		_driver->sysEx(message, 6);
+		if(_driver)
+			_driver->property(MIDI_PROP_MASTER_VOLUME, volume);
 	}
 
+	virtual int getVolume() {
+		return _driver ? _driver->property(MIDI_PROP_MASTER_VOLUME, -1) : 0;
+ 	}
+
 	virtual void playSwitch(bool play) {
 		if (!play) {
 			// Send "All Sound Off" on all channels
diff --git a/engines/sci/sfx/softseq.h b/engines/sci/sfx/softseq.h
index 31741785ae..d3f4168ea7 100644
--- a/engines/sci/sfx/softseq.h
+++ b/engines/sci/sfx/softseq.h
@@ -65,7 +65,7 @@ struct sfx_softseq_t {
 	** Parameters: (sfx_softseq_t *) self: Self reference
 	*/
 
-	void (*set_volume)(sfx_softseq_t *self, int new_volume);
+	void (*setVolume)(sfx_softseq_t *self, int new_volume);
 	/* Sets the sequencer volume
 	** Parameters: (sfx_softseq_t *) self: Self reference
 	**             (int) new_volume: A volume, between 0 (quiet) and 127 (max)
diff --git a/engines/sci/sfx/softseq/adlib.cpp b/engines/sci/sfx/softseq/adlib.cpp
index 15e1ed9089..1623520ea5 100644
--- a/engines/sci/sfx/softseq/adlib.cpp
+++ b/engines/sci/sfx/softseq/adlib.cpp
@@ -629,6 +629,19 @@ bool MidiDriver_Adlib::loadResource(const byte *data, uint size) {
 	return true;
 }
 
+int32 MidiDriver_Adlib::property(int prop, int32 param) {
+	switch(prop) {
+	case MIDI_PROP_MASTER_VOLUME:
+		if(param != -1)
+			_masterVolume = param;
+		return _masterVolume;
+	default:
+		break;
+	}
+	return -1;
+}
+
+
 int MidiPlayer_Adlib::open(ResourceManager *resMan) {
 	assert(resMan != NULL);
 
diff --git a/engines/sci/sfx/softseq/adlib.h b/engines/sci/sfx/softseq/adlib.h
index 771bdc3927..fccf0a2c94 100644
--- a/engines/sci/sfx/softseq/adlib.h
+++ b/engines/sci/sfx/softseq/adlib.h
@@ -36,7 +36,7 @@ public:
 	};
 
 	MidiDriver_Adlib(Audio::Mixer *mixer) : MidiDriver_Emulated(mixer), _playSwitch(true), _masterVolume(15), _rhythmKeyMap(0), _opl(0) { }
-	~MidiDriver_Adlib() { }
+	virtual ~MidiDriver_Adlib() { }
 
 	// MidiDriver
 	int open(bool isSCI0);
@@ -55,6 +55,7 @@ public:
 	void setVolume(byte volume);
 	void playSwitch(bool play);
 	bool loadResource(const byte *data, uint size);
+	virtual int32 property(int prop, int32 param);
 
 private:
 	enum ChannelID {