Initial commit

engines/mediastation/actors/sound.cpp

@@ -0,0 +1,149 @@
+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "mediastation/audio.h"
+#include "mediastation/debugchannels.h"
+#include "mediastation/actors/sound.h"
+#include "mediastation/mediastation.h"
+
+namespace MediaStation {
+
+SoundActor::~SoundActor() {
+	unregisterWithStreamManager();
+	if (_streamFeed != nullptr) {
+		g_engine->getStreamFeedManager()->closeStreamFeed(_streamFeed);
+		_streamFeed = nullptr;
+	}
+}
+
+void SoundActor::readParameter(Chunk &chunk, ActorHeaderSectionType paramType) {
+	switch (paramType) {
+	case kActorHeaderActorId: {
+		// We already have this actor's ID, so we will just verify it is the same
+		// as the ID we have already read.
+		uint32 duplicateActorId = chunk.readTypedUint16();
+		if (duplicateActorId != _id) {
+			warning("Duplicate actor ID %d does not match original ID %d", duplicateActorId, _id);
+		}
+		break;
+	}
+
+	case kActorHeaderChannelIdent:
+		_channelIdent = chunk.readTypedChannelIdent();
+		registerWithStreamManager();
+		break;
+
+	case kActorHeaderHasOwnSubfile:
+		_hasOwnSubfile = static_cast<bool>(chunk.readTypedByte());
+		break;
+
+	case kActorHeaderSoundInfo:
+		_sequence.readParameters(chunk);
+		break;
+
+	case kActorHeaderMovieLoadType:
+		_loadType = chunk.readTypedByte();
+		break;
+
+	default:
+		Actor::readParameter(chunk, paramType);
+	}
+}
+
+void SoundActor::process() {
+	if (!_isPlaying) {
+		return;
+	}
+
+	processTimeEventHandlers();
+	if (!_sequence.isActive()) {
+		_isPlaying = false;
+		_sequence.stop();
+		runEventHandlerIfExists(kSoundEndEvent);
+	}
+}
+void SoundActor::readChunk(Chunk &chunk) {
+	_isLoadedFromChunk = true;
+	_sequence.readChunk(chunk);
+}
+
+ScriptValue SoundActor::callMethod(BuiltInMethod methodId, Common::Array<ScriptValue> &args) {
+	ScriptValue returnValue;
+
+	switch (methodId) {
+	case kSpatialShowMethod:
+		// WORKAROUND: No-op to avoid triggering error on Dalmatians
+		// timer_6c06_AnsweringMachine, which calls SpatialShow on a sound.
+		// Since the engine is currently flagging errors on unimplemented
+		// methods for easier debugging, a no-op is used here to avoid the error.
+		assert(args.empty());
+		return returnValue;
+
+	case kTimePlayMethod: {
+		assert(args.empty());
+		timePlay();
+		return returnValue;
+	}
+
+	case kTimeStopMethod: {
+		assert(args.empty());
+		timeStop();
+		return returnValue;
+	}
+
+	default:
+		return Actor::callMethod(methodId, args);
+	}
+}
+
+void SoundActor::timePlay() {
+	if (_streamFeed == nullptr && !_isLoadedFromChunk) {
+		_streamFeed = g_engine->getStreamFeedManager()->openStreamFeed(_id);
+		_streamFeed->readData();
+	}
+
+	if (_isPlaying) {
+		return;
+	}
+
+	if (_sequence.isEmpty()) {
+		_isPlaying = false;
+		return;
+	}
+
+	_isPlaying = true;
+	_startTime = g_system->getMillis();
+	_lastProcessedTime = 0;
+	_sequence.play();
+	runEventHandlerIfExists(kSoundBeginEvent);
+}
+
+void SoundActor::timeStop() {
+	if (!_isPlaying) {
+		return;
+	}
+
+	_isPlaying = false;
+	_sequence.stop();
+	runEventHandlerIfExists(kSoundStoppedEvent);
+}
+
+} // End of namespace MediaStation