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Diffstat (limited to 'indra/llaudio/lllistener_fmodex.cpp')
| -rw-r--r-- | indra/llaudio/lllistener_fmodex.cpp | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/indra/llaudio/lllistener_fmodex.cpp b/indra/llaudio/lllistener_fmodex.cpp new file mode 100644 index 0000000000..2509a7aebc --- /dev/null +++ b/indra/llaudio/lllistener_fmodex.cpp @@ -0,0 +1,135 @@ +/** + * @file listener_fmodex.cpp + * @brief Implementation of LISTENER class abstracting the audio + * support as a FMODEX implementation + * + * $LicenseInfo:firstyear=2002&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2010, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +#include "linden_common.h" +#include "llaudioengine.h" +#include "lllistener_fmodex.h" +#include "fmod.hpp" + +//----------------------------------------------------------------------- +// constructor +//----------------------------------------------------------------------- +LLListener_FMODEX::LLListener_FMODEX(FMOD::System *system) +{ + mSystem = system; + init(); +} + +//----------------------------------------------------------------------- +LLListener_FMODEX::~LLListener_FMODEX() +{ +} + +//----------------------------------------------------------------------- +void LLListener_FMODEX::init(void) +{ + // do inherited + LLListener::init(); + mDopplerFactor = 1.0f; + mRolloffFactor = 1.0f; +} + +//----------------------------------------------------------------------- +void LLListener_FMODEX::translate(LLVector3 offset) +{ + LLListener::translate(offset); + + mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)mPosition.mV, NULL, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV); +} + +//----------------------------------------------------------------------- +void LLListener_FMODEX::setPosition(LLVector3 pos) +{ + LLListener::setPosition(pos); + + mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)mPosition.mV, NULL, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV); +} + +//----------------------------------------------------------------------- +void LLListener_FMODEX::setVelocity(LLVector3 vel) +{ + LLListener::setVelocity(vel); + + mSystem->set3DListenerAttributes(0, NULL, (FMOD_VECTOR*)mVelocity.mV, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV); +} + +//----------------------------------------------------------------------- +void LLListener_FMODEX::orient(LLVector3 up, LLVector3 at) +{ + LLListener::orient(up, at); + + // Welcome to the transition between right and left + // (coordinate systems, that is) + // Leaving the at vector alone results in a L/R reversal + // since DX is left-handed and we (LL, OpenGL, OpenAL) are right-handed + at = -at; + + mSystem->set3DListenerAttributes(0, NULL, NULL, (FMOD_VECTOR*)at.mV, (FMOD_VECTOR*)up.mV); +} + +//----------------------------------------------------------------------- +void LLListener_FMODEX::commitDeferredChanges() +{ + mSystem->update(); +} + + +void LLListener_FMODEX::setRolloffFactor(F32 factor) +{ + //An internal FMODEx optimization skips 3D updates if there have not been changes to the 3D sound environment. + //Sadly, a change in rolloff is not accounted for, thus we must touch the listener properties as well. + //In short: Changing the position ticks a dirtyflag inside fmodex, which makes it not skip 3D processing next update call. + if(mRolloffFactor != factor) + { + LLVector3 pos = mVelocity - LLVector3(0.f,0.f,.1f); + mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)pos.mV, NULL, NULL, NULL); + mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)mVelocity.mV, NULL, NULL, NULL); + } + mRolloffFactor = factor; + mSystem->set3DSettings(mDopplerFactor, 1.f, mRolloffFactor); +} + + +F32 LLListener_FMODEX::getRolloffFactor() +{ + return mRolloffFactor; +} + + +void LLListener_FMODEX::setDopplerFactor(F32 factor) +{ + mDopplerFactor = factor; + mSystem->set3DSettings(mDopplerFactor, 1.f, mRolloffFactor); +} + + +F32 LLListener_FMODEX::getDopplerFactor() +{ + return mDopplerFactor; +} + + |