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engines/hpl1/engine/impl/LowLevelSoundOpenAL.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/LowLevelSoundOpenAL.h"
+#include "hpl1/engine/impl/OpenALSoundChannel.h"
+#include "hpl1/engine/impl/OpenALSoundData.h"
+#include "hpl1/engine/impl/OpenALSoundEnvironment.h"
+#include "hpl1/engine/math/Math.h"
+#include "hpl1/engine/system/String.h"
+#include "hpl1/engine/system/low_level_system.h"
+
+#include "audio/mixer.h"
+#include "common/system.h"
+#include "hpl1/debug.h"
+
+namespace hpl {
+
+//////////////////////////////////////////////////////////////////////////
+// CONSTRUCTORS
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+cLowLevelSoundOpenAL::cLowLevelSoundOpenAL() : _activeChannels(MAX_ACTIVE_CHANNELS, nullptr) {
+	mvFormats[0] = "OGG";
+	mvFormats[1] = "WAV";
+	mvFormats[2] = "";
+	mbInitialized = false;
+	mbEnvAudioEnabled = false;
+	mbNullEffectAttached = false;
+	_mixer = g_system->getMixer();
+}
+
+//-----------------------------------------------------------------------
+
+cLowLevelSoundOpenAL::~cLowLevelSoundOpenAL() {
+}
+
+//-----------------------------------------------------------------------
+
+//////////////////////////////////////////////////////////////////////////
+// PUBLIC METHOD
+//////////////////////////////////////////////////////////////////////////
+
+//-----------------------------------------------------------------------
+
+iSoundData *cLowLevelSoundOpenAL::LoadSoundData(const tString &asName, const tString &asFilePath,
+												const tString &asType, bool abStream, bool abLoopStream) {
+	cOpenALSoundData *pSoundData = hplNew(cOpenALSoundData, (asName, abStream, this));
+
+	pSoundData->SetLoopStream(abLoopStream);
+
+	if (pSoundData->CreateFromFile(asFilePath) == false) {
+		hplDelete(pSoundData);
+		return NULL;
+	}
+
+	return pSoundData;
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::GetSupportedFormats(tStringList &alstFormats) {
+	int lPos = 0;
+
+	while (mvFormats[lPos] != "") {
+		alstFormats.push_back(mvFormats[lPos]);
+		lPos++;
+	}
+}
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::UpdateSound(float afTimeStep) {
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::SetListenerAttributes(const cVector3f &avPos, const cVector3f &avVel,
+												 const cVector3f &avForward, const cVector3f &avUp) {
+	mvListenerPosition = avPos;
+	mvListenerVelocity = avVel;
+	mvListenerForward = avForward;
+	mvListenerUp = avUp;
+
+	mvListenerRight = cMath::Vector3Cross(mvListenerForward, mvListenerUp);
+
+	//		m_mtxListener = cMatrixf(
+	//				-mvListenerRight.x, -mvListenerRight.y,-mvListenerRight.z, avPos.x,
+	//				-mvListenerUp.x, -mvListenerUp.y,-mvListenerUp.z, avPos.y,
+	//				-mvListenerForward.x, -mvListenerForward.y,-mvListenerForward.z, avPos.z,
+	//				0, 0,0, 1
+	//			);
+	m_mtxListener = cMatrixf::Identity;
+	m_mtxListener.SetRight(mvListenerRight);
+	m_mtxListener.SetUp(mvListenerUp);
+	m_mtxListener.SetForward(mvListenerForward * -1);
+	m_mtxListener = cMath::MatrixInverse(m_mtxListener);
+	m_mtxListener.SetTranslation(mvListenerPosition);
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::SetListenerPosition(const cVector3f &avPos) {
+	mvListenerPosition = avPos;
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::SetListenerAttenuation(bool abEnabled) {
+	mbListenerAttenuation = abEnabled;
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::SetSetRolloffFactor(float afFactor) {
+	HPL1_UNIMPLEMENTED(cLowLevelSoundOpenAL::SetSetRolloffFactor);
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::SetVolume(float volume) {
+	g_system->getMixer()->setVolumeForSoundType(Audio::Mixer::kPlainSoundType, static_cast<byte>(volume * 255.f));
+	mfVolume = volume;
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::Init(bool abUseHardware, bool abForceGeneric, bool abUseEnvAudio, int alMaxChannels,
+								int alStreamUpdateFreq, bool abUseThreading, bool abUseVoiceManagement,
+								int alMaxMonoSourceHint, int alMaxStereoSourceHint,
+								int alStreamingBufferSize, int alStreamingBufferCount, bool abEnableLowLevelLog, tString asDeviceName) {
+
+	// Default listener settings.
+	mvListenerForward = cVector3f(0, 0, 1);
+	mvListenerUp = cVector3f(0, 1, 0);
+
+	SetVolume(1.0f);
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::SetEnvVolume(float afEnvVolume) {
+	HPL1_UNIMPLEMENTED(cLowLevelSoundOpenAL::SetEnvVolume);
+}
+
+//-----------------------------------------------------------------------
+
+iSoundEnvironment *cLowLevelSoundOpenAL::LoadSoundEnvironment(const tString &asFilePath) {
+	HPL1_UNIMPLEMENTED(cLowLevelSoundOpenAL::LoadSoundEnvironment);
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::SetSoundEnvironment(iSoundEnvironment *apSoundEnv) {
+	HPL1_UNIMPLEMENTED(cLowLevelSoundOpenAL::SetSoundEnvironment);
+}
+
+//-----------------------------------------------------------------------
+
+void cLowLevelSoundOpenAL::FadeSoundEnvironment(iSoundEnvironment *apSourceSoundEnv, iSoundEnvironment *apDestSoundEnv, float afT) {
+	HPL1_UNIMPLEMENTED(cLowLevelSoundOpenAL::FadeSoundEnvironment);
+}
+
+static cOpenALSoundChannel **findBestSlot(Common::Array<cOpenALSoundChannel *> &slots, int priority) {
+	cOpenALSoundChannel **best = slots.end();
+	for (auto it = slots.begin(); it != slots.end(); ++it) {
+		if (*it == nullptr || !(*it)->IsPlaying())
+			return it;
+		if ((*it)->GetPriority() < priority)
+			best = it;
+	}
+	return best;
+}
+
+bool cLowLevelSoundOpenAL::playChannel(cOpenALSoundChannel *channel) {
+	auto slot = findBestSlot(_activeChannels, channel->GetPriority());
+	if (slot != _activeChannels.end()) {
+		if (*slot != nullptr) {
+			if ((*slot)->IsPlaying()) {
+				Hpl1::logInfo(Hpl1::kDebugAudio, "evicting sound from data %s from mixer slot\n",
+							  (*slot)->mpData->GetName().c_str());
+			}
+			(*slot)->Stop();
+		}
+		*slot = channel;
+		_mixer->stopHandle(channel->_handle);
+		channel->_audioStream->rewind();
+		_mixer->playStream(Audio::Mixer::SoundType::kPlainSoundType, &channel->_handle, channel->_audioStream, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO);
+		return true;
+	}
+	return false;
+}
+
+void cLowLevelSoundOpenAL::closeChannel(cOpenALSoundChannel *channel) {
+	auto slot = Common::find(_activeChannels.begin(), _activeChannels.end(), channel);
+	if (slot != _activeChannels.end()) {
+		(*slot)->Stop();
+		*slot = nullptr;
+	}
+}
+
+} // namespace hpl