SCI: Split audio sync to its own class

SCI32 has its own audio handling code, but audio sync code is the
same as SCI16.

8 files changed, 146 insertions, 58 deletions

diff --git a/engines/sci/engine/ksound.cpp b/engines/sci/engine/ksound.cpp
index 398a623286..2b22d6867b 100644
--- a/engines/sci/engine/ksound.cpp
+++ b/engines/sci/engine/ksound.cpp
@@ -27,6 +27,7 @@
 #include "sci/engine/vm.h"		// for Object
 #include "sci/sound/audio.h"
 #include "sci/sound/soundcmd.h"
+#include "sci/sound/sync.h"
 
 #include "audio/mixer.h"
 #include "common/system.h"
@@ -286,14 +287,12 @@ reg_t kDoAudio(EngineState *s, int argc, reg_t *argv) {
 }
 
 reg_t kDoSync(EngineState *s, int argc, reg_t *argv) {
-	SegManager *segMan = s->_segMan;
 	switch (argv[0].toUint16()) {
 	case kSciAudioSyncStart: {
 		ResourceId id;
 
-		g_sci->_audio->stopSoundSync();
+		g_sci->_sync->stop();
 
-		// Load sound sync resource and lock it
 		if (argc == 3) {
 			id = ResourceId(kResourceTypeSync, argv[2].toUint16());
 		} else if (argc == 7) {
@@ -304,14 +303,14 @@ reg_t kDoSync(EngineState *s, int argc, reg_t *argv) {
 			return s->r_acc;
 		}
 
-		g_sci->_audio->setSoundSync(id, argv[1], segMan);
+		g_sci->_sync->start(id, argv[1]);
 		break;
 	}
 	case kSciAudioSyncNext:
-		g_sci->_audio->doSoundSync(argv[1], segMan);
+		g_sci->_sync->next(argv[1]);
 		break;
 	case kSciAudioSyncStop:
-		g_sci->_audio->stopSoundSync();
+		g_sci->_sync->stop();
 		break;
 	default:
 		error("DoSync: Unhandled subfunction %d", argv[0].toUint16());
diff --git a/engines/sci/module.mk b/engines/sci/module.mk
index a02147e4d0..c35d0b51dd 100644
--- a/engines/sci/module.mk
+++ b/engines/sci/module.mk
@@ -69,6 +69,7 @@ MODULE_OBJS := \
 	sound/midiparser_sci.o \
 	sound/music.o \
 	sound/soundcmd.o \
+	sound/sync.o \
 	sound/drivers/adlib.o \
 	sound/drivers/amigamac.o \
 	sound/drivers/cms.o \
diff --git a/engines/sci/sci.cpp b/engines/sci/sci.cpp
index e14d12b918..8c23d322e7 100644
--- a/engines/sci/sci.cpp
+++ b/engines/sci/sci.cpp
@@ -43,6 +43,7 @@
 
 #include "sci/sound/audio.h"
 #include "sci/sound/music.h"
+#include "sci/sound/sync.h"
 #include "sci/sound/soundcmd.h"
 #include "sci/graphics/animate.h"
 #include "sci/graphics/cache.h"
@@ -86,6 +87,7 @@ SciEngine::SciEngine(OSystem *syst, const ADGameDescription *desc, SciGameId gam
 	_gfxMacIconBar = 0;
 
 	_audio = 0;
+	_sync = nullptr;
 	_features = 0;
 	_resMan = 0;
 	_gamestate = 0;
@@ -182,6 +184,7 @@ SciEngine::~SciEngine() {
 	delete _gfxScreen;
 
 	delete _audio;
+	delete _sync;
 	delete _soundCmd;
 	delete _kernel;
 	delete _vocabulary;
@@ -267,6 +270,7 @@ Common::Error SciEngine::run() {
 	if (getGameId() == GID_CHRISTMAS1990)
 		_vocabulary = new Vocabulary(_resMan, false);
 	_audio = new AudioPlayer(_resMan);
+	_sync = new Sync(_resMan, segMan);
 	_gamestate = new EngineState(segMan);
 	_eventMan = new EventManager(_resMan->detectFontExtended());
 
@@ -802,6 +806,7 @@ void SciEngine::exitGame() {
 	if (_gamestate->abortScriptProcessing != kAbortLoadGame) {
 		_gamestate->_executionStack.clear();
 		_audio->stopAllAudio();
+		_sync->stop();
 		_soundCmd->clearPlayList();
 	}
 
diff --git a/engines/sci/sci.h b/engines/sci/sci.h
index c49a516d01..ff414727fa 100644
--- a/engines/sci/sci.h
+++ b/engines/sci/sci.h
@@ -56,6 +56,7 @@ class SoundCommandParser;
 class EventManager;
 class SegManager;
 class ScriptPatcher;
+class Sync;
 
 class GfxAnimate;
 class GfxCache;
@@ -372,6 +373,7 @@ public:
 #endif
 
 	AudioPlayer *_audio;
+	Sync *_sync;
 	SoundCommandParser *_soundCmd;
 	GameFeatures *_features;
 
diff --git a/engines/sci/sound/audio.cpp b/engines/sci/sound/audio.cpp
index a74bfa245f..71b081049e 100644
--- a/engines/sci/sound/audio.cpp
+++ b/engines/sci/sound/audio.cpp
@@ -22,7 +22,6 @@
 
 #include "sci/resource.h"
 #include "sci/engine/kernel.h"
-#include "sci/engine/selector.h"
 #include "sci/engine/seg_manager.h"
 #include "sci/sound/audio.h"
 
@@ -45,7 +44,7 @@
 namespace Sci {
 
 AudioPlayer::AudioPlayer(ResourceManager *resMan) : _resMan(resMan), _audioRate(11025),
-		_syncResource(NULL), _syncOffset(0), _audioCdStart(0), _initCD(false) {
+		_audioCdStart(0), _initCD(false) {
 
 	_mixer = g_system->getMixer();
 	_wPlayFlag = false;
@@ -56,7 +55,6 @@ AudioPlayer::~AudioPlayer() {
 }
 
 void AudioPlayer::stopAllAudio() {
-	stopSoundSync();
 	stopAudio();
 	if (_audioCdStart > 0)
 		audioCdStop();
@@ -474,43 +472,6 @@ Audio::RewindableAudioStream *AudioPlayer::getAudioStream(uint32 number, uint32
 	return NULL;
 }
 
-void AudioPlayer::setSoundSync(ResourceId id, reg_t syncObjAddr, SegManager *segMan) {
-	_syncResource = _resMan->findResource(id, 1);
-	_syncOffset = 0;
-
-	if (_syncResource) {
-		writeSelectorValue(segMan, syncObjAddr, SELECTOR(syncCue), 0);
-	} else {
-		warning("setSoundSync: failed to find resource %s", id.toString().c_str());
-		// Notify the scripts to stop sound sync
-		writeSelectorValue(segMan, syncObjAddr, SELECTOR(syncCue), SIGNAL_OFFSET);
-	}
-}
-
-void AudioPlayer::doSoundSync(reg_t syncObjAddr, SegManager *segMan) {
-	if (_syncResource && (_syncOffset < _syncResource->size - 1)) {
-		int16 syncCue = -1;
-		int16 syncTime = (int16)READ_SCI11ENDIAN_UINT16(_syncResource->data + _syncOffset);
-
-		_syncOffset += 2;
-
-		if ((syncTime != -1) && (_syncOffset < _syncResource->size - 1)) {
-			syncCue = (int16)READ_SCI11ENDIAN_UINT16(_syncResource->data + _syncOffset);
-			_syncOffset += 2;
-		}
-
-		writeSelectorValue(segMan, syncObjAddr, SELECTOR(syncTime), syncTime);
-		writeSelectorValue(segMan, syncObjAddr, SELECTOR(syncCue), syncCue);
-	}
-}
-
-void AudioPlayer::stopSoundSync() {
-	if (_syncResource) {
-		_resMan->unlockResource(_syncResource);
-		_syncResource = NULL;
-	}
-}
-
 int AudioPlayer::audioCdPlay(int track, int start, int duration) {
 	if (!_initCD) {
 		// Initialize CD mode if we haven't already
diff --git a/engines/sci/sound/audio.h b/engines/sci/sound/audio.h
index 4a8b26567d..3d25dcaeef 100644
--- a/engines/sci/sound/audio.h
+++ b/engines/sci/sound/audio.h
@@ -46,12 +46,6 @@ enum AudioCommands {
 	kSciAudioCD = 10 /* Plays SCI1.1 CD audio */
 };
 
-enum AudioSyncCommands {
-	kSciAudioSyncStart = 0,
-	kSciAudioSyncNext = 1,
-	kSciAudioSyncStop = 2
-};
-
 #define AUDIO_VOLUME_MAX 127
 
 class Resource;
@@ -77,10 +71,6 @@ public:
 
 	void handleFanmadeSciAudio(reg_t sciAudioObject, SegManager *segMan);
 
-	void setSoundSync(ResourceId id, reg_t syncObjAddr, SegManager *segMan);
-	void doSoundSync(reg_t syncObjAddr, SegManager *segMan);
-	void stopSoundSync();
-
 	int audioCdPlay(int track, int start, int duration);
 	void audioCdStop();
 	void audioCdUpdate();
@@ -93,8 +83,6 @@ private:
 	uint16 _audioRate;
 	Audio::SoundHandle _audioHandle;
 	Audio::Mixer *_mixer;
-	Resource *_syncResource; /**< Used by kDoSync for speech syncing in CD talkie games */
-	uint _syncOffset;
 	uint32 _audioCdStart;
 	bool _wPlayFlag;
 	bool _initCD;
diff --git a/engines/sci/sound/sync.cpp b/engines/sci/sound/sync.cpp
new file mode 100644
index 0000000000..08abad188b
--- /dev/null
+++ b/engines/sci/sound/sync.cpp
@@ -0,0 +1,75 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "sci/engine/kernel.h"
+#include "sci/util.h"
+#include "sync.h"
+
+namespace Sci {
+Sync::Sync(ResourceManager *resMan, SegManager *segMan) :
+	_resMan(resMan),
+	_segMan(segMan),
+	_resource(nullptr),
+	_offset(0) {}
+
+Sync::~Sync() {
+	stop();
+}
+
+void Sync::start(const ResourceId id, const reg_t syncObjAddr) {
+	_resource = _resMan->findResource(id, true);
+	_offset = 0;
+
+	if (_resource) {
+		writeSelectorValue(_segMan, syncObjAddr, SELECTOR(syncCue), 0);
+	} else {
+		warning("Sync::start: failed to find resource %s", id.toString().c_str());
+		// Notify the scripts to stop sound sync
+		writeSelectorValue(_segMan, syncObjAddr, SELECTOR(syncCue), SIGNAL_OFFSET);
+	}
+}
+
+void Sync::next(const reg_t syncObjAddr) {
+	if (_resource && (_offset < _resource->size - 1)) {
+		int16 syncCue = -1;
+		int16 syncTime = (int16)READ_SCI11ENDIAN_UINT16(_resource->data + _offset);
+
+		_offset += 2;
+
+		if ((syncTime != -1) && (_offset < _resource->size - 1)) {
+			syncCue = (int16)READ_SCI11ENDIAN_UINT16(_resource->data + _offset);
+			_offset += 2;
+		}
+
+		writeSelectorValue(_segMan, syncObjAddr, SELECTOR(syncTime), syncTime);
+		writeSelectorValue(_segMan, syncObjAddr, SELECTOR(syncCue), syncCue);
+	}
+}
+
+void Sync::stop() {
+	if (_resource) {
+		_resMan->unlockResource(_resource);
+		_resource = nullptr;
+	}
+}
+
+} // End of namespace Sci
diff --git a/engines/sci/sound/sync.h b/engines/sci/sound/sync.h
new file mode 100644
index 0000000000..c80982bff7
--- /dev/null
+++ b/engines/sci/sound/sync.h
@@ -0,0 +1,57 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef SCI_SOUND_SYNC_H
+#define SCI_SOUND_SYNC_H
+
+#include "sci/engine/selector.h"
+#include "sci/engine/vm_types.h"
+
+namespace Sci {
+
+enum AudioSyncCommands {
+	kSciAudioSyncStart = 0,
+	kSciAudioSyncNext = 1,
+	kSciAudioSyncStop = 2
+};
+
+class Resource;
+class ResourceManager;
+class SegManager;
+
+class Sync {
+	SegManager *_segMan;
+	ResourceManager *_resMan;
+	Resource *_resource;
+	uint _offset;
+
+public:
+	Sync(ResourceManager *resMan, SegManager *segMan);
+	~Sync();
+
+	void start(const ResourceId id, const reg_t syncObjAddr);
+	void next(const reg_t syncObjAddr);
+	void stop();
+};
+
+}
+#endif