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engines/hpl1/engine/impl/OpenALSoundData.cpp

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+/* 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/>.
+ *
+ */
+
+/*
+ * Copyright (C) 2006-2010 - Frictional Games
+ *
+ * This file is part of HPL1 Engine.
+ */
+
+#include "hpl1/engine/impl/OpenALSoundData.h"
+#include "audio/audiostream.h"
+#include "audio/decoders/vorbis.h"
+#include "audio/decoders/wave.h"
+#include "common/memstream.h"
+#include "hpl1/debug.h"
+#include "hpl1/engine/impl/OpenALSoundChannel.h"
+#include "hpl1/engine/system/SystemTypes.h"
+#include "hpl1/engine/system/low_level_system.h"
+
+namespace hpl {
+
+enum DataFormat {
+	kWav,
+	kOgg,
+	kNone,
+};
+
+//////////////////////////////////////////////////////////////////////////
+// CONSTRUCTORS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+cOpenALSoundData::cOpenALSoundData(tString asName, bool abStream, cLowLevelSoundOpenAL *lowLevelSound)
+	: iSoundData(asName, abStream), _lowLevelSound(lowLevelSound) {
+}
+
+//-----------------------------------------------------------------------
+
+cOpenALSoundData::~cOpenALSoundData() {
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PUBLIC METHODS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+static uint audioDataFormat(const tString &filename) {
+	if (filename.hasSuffix("wav"))
+		return kWav;
+	else if (filename.hasSuffix("ogg"))
+		return kOgg;
+	return kNone;
+}
+
+bool cOpenALSoundData::CreateFromFile(const tString &filename) {
+	if (_audioData) {
+		Hpl1::logWarning(Hpl1::kDebugAudio, "overriding previous sound data with new audio at '%s'\n", filename.c_str());
+	}
+	Common::File file;
+	if (!file.open(Common::Path(filename))) {
+		Hpl1::logWarning(Hpl1::kDebugFilePath | Hpl1::kDebugResourceLoading | Hpl1::kDebugAudio, "Audio file '%s' could not be opened\n", filename.c_str());
+		return false;
+	}
+	if (file.err() || file.size() < 0) {
+		Hpl1::logError(Hpl1::kDebugResourceLoading | Hpl1::kDebugAudio, "error reading file '%s'\n", filename.c_str());
+		return false;
+	}
+	_format = audioDataFormat(filename);
+	_audioDataSize = file.size();
+	_audioData.reset(Common::SharedPtr<byte>((byte *)malloc(_audioDataSize), free));
+	file.read(_audioData.get(), _audioDataSize);
+	return true;
+}
+
+//-----------------------------------------------------------------------
+
+static Audio::SeekableAudioStream *createAudioStream(Common::MemoryReadStream *data, uint format) {
+	switch (format) {
+#ifdef USE_VORBIS
+	case kOgg:
+		return Audio::makeVorbisStream(data, DisposeAfterUse::YES);
+#endif
+	case kWav:
+		return Audio::makeWAVStream(data, DisposeAfterUse::YES);
+	}
+	return nullptr;
+}
+
+iSoundChannel *cOpenALSoundData::CreateChannel(int priority) {
+	IncUserCount();
+	if (!_audioData)
+		return nullptr;
+	auto *dataStream = new Common::MemoryReadStream(_audioData, _audioDataSize);
+	auto *audioStream = createAudioStream(dataStream, _format);
+	return new cOpenALSoundChannel(this, audioStream, mpSoundManger, _lowLevelSound, priority);
+}
+
+} // namespace hpl