Merge. Refresh from /lindenlab/viewer-cat prior to pushing.

24 files changed, 1289 insertions, 1262 deletions

diff --git a/indra/llaudio/CMakeLists.txt b/indra/llaudio/CMakeLists.txt
index 24d2531106..1b2bdb9888 100644..100755
--- a/indra/llaudio/CMakeLists.txt
+++ b/indra/llaudio/CMakeLists.txt
@@ -5,7 +5,7 @@ project(llaudio)
 include(00-Common)
 include(Audio)
 include(LLAudio)
-include(FMOD)
+include(FMODEX)
 include(OPENAL)
 include(LLCommon)
 include(LLMath)
@@ -24,7 +24,6 @@ include_directories(
     ${VORBIS_INCLUDE_DIRS}
     ${OPENAL_LIB_INCLUDE_DIRS}
     ${FREEAULT_LIB_INCLUDE_DIRS}
-    ${FMOD_INCLUDE_DIR}
     )
 
 set(llaudio_SOURCE_FILES
@@ -44,29 +43,22 @@ set(llaudio_HEADER_FILES
     llwindgen.h
     )
 
-if (FMOD)
+if (FMODEX)
     include_directories(
-        ${FMOD_INCLUDE_DIR}
+        ${FMODEX_INCLUDE_DIR}
         )
-
     list(APPEND llaudio_SOURCE_FILES
-         llaudioengine_fmod.cpp
-         lllistener_fmod.cpp
-         llstreamingaudio_fmod.cpp
+         llaudioengine_fmodex.cpp
+         lllistener_fmodex.cpp
+         llstreamingaudio_fmodex.cpp
          )
 
     list(APPEND llaudio_HEADER_FILES
-         llaudioengine_fmod.h
-         lllistener_fmod.h
-         llstreamingaudio_fmod.h
+         llaudioengine_fmodex.h
+         lllistener_fmodex.h
+         llstreamingaudio_fmodex.h
          )
-
-    if (LINUX OR DARWIN)
-      set_source_files_properties(llaudioengine_fmod.cpp
-                                  llstreamingaudio_fmod.cpp
-                                  COMPILE_FLAGS -Wno-write-strings)
-    endif (LINUX OR DARWIN)
-endif (FMOD)
+endif (FMODEX)
 
 if (OPENAL)
   list(APPEND llaudio_SOURCE_FILES
diff --git a/indra/llaudio/llaudiodecodemgr.cpp b/indra/llaudio/llaudiodecodemgr.cpp
index 6c97a64ed7..6c97a64ed7 100644..100755
--- a/indra/llaudio/llaudiodecodemgr.cpp
+++ b/indra/llaudio/llaudiodecodemgr.cpp
diff --git a/indra/llaudio/llaudiodecodemgr.h b/indra/llaudio/llaudiodecodemgr.h
index e42fe8a40d..e42fe8a40d 100644..100755
--- a/indra/llaudio/llaudiodecodemgr.h
+++ b/indra/llaudio/llaudiodecodemgr.h
diff --git a/indra/llaudio/llaudioengine.cpp b/indra/llaudio/llaudioengine.cpp
index 06e752cf34..06e752cf34 100644..100755
--- a/indra/llaudio/llaudioengine.cpp
+++ b/indra/llaudio/llaudioengine.cpp
diff --git a/indra/llaudio/llaudioengine.h b/indra/llaudio/llaudioengine.h
index 99b96c3c38..da1629a1db 100644..100755
--- a/indra/llaudio/llaudioengine.h
+++ b/indra/llaudio/llaudioengine.h
@@ -42,7 +42,6 @@
 #include "lllistener.h"
 
 const F32 LL_WIND_UPDATE_INTERVAL = 0.1f;
-const F32 LL_ROLLOFF_MULTIPLIER_UNDER_WATER = 5.f;			//  How much sounds are weaker under water
 const F32 LL_WIND_UNDERWATER_CENTER_FREQ = 20.f;
 
 const F32 ATTACHED_OBJECT_TIMEOUT = 5.0f;
diff --git a/indra/llaudio/llaudioengine_fmod.cpp b/indra/llaudio/llaudioengine_fmod.cpp
deleted file mode 100644
index a40de9fa68..0000000000
--- a/indra/llaudio/llaudioengine_fmod.cpp
+++ /dev/null
@@ -1,781 +0,0 @@
-/** 
- * @file audioengine_fmod.cpp
- * @brief Implementation of LLAudioEngine class abstracting the audio support as a FMOD 3D 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 "llstreamingaudio.h"
-#include "llstreamingaudio_fmod.h"
-
-#include "llaudioengine_fmod.h"
-#include "lllistener_fmod.h"
-
-#include "llerror.h"
-#include "llmath.h"
-#include "llrand.h"
-
-#include "fmod.h"
-#include "fmod_errors.h"
-#include "lldir.h"
-#include "llapr.h"
-
-#include "sound_ids.h"
-
-
-extern "C" {
-	void * F_CALLBACKAPI windCallback(void *originalbuffer, void *newbuffer, int length, void* userdata);
-}
-
-
-LLAudioEngine_FMOD::LLAudioEngine_FMOD()
-{
-	mInited = false;
-	mWindGen = NULL;
-	mWindDSP = NULL;
-}
-
-
-LLAudioEngine_FMOD::~LLAudioEngine_FMOD()
-{
-}
-
-
-bool LLAudioEngine_FMOD::init(const S32 num_channels, void* userdata)
-{
-	LLAudioEngine::init(num_channels, userdata);
-
-	// Reserve one extra channel for the http stream.
-	if (!FSOUND_SetMinHardwareChannels(num_channels + 1))
-	{
-		LL_WARNS("AppInit") << "FMOD::init[0](), error: " << FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
-	}
-
-	LL_DEBUGS("AppInit") << "LLAudioEngine_FMOD::init() initializing FMOD" << LL_ENDL;
-
-	F32 version = FSOUND_GetVersion();
-	if (version < FMOD_VERSION)
-	{
-		LL_WARNS("AppInit") << "Error : You are using the wrong FMOD version (" << version
-			<< ")!  You should be using FMOD " << FMOD_VERSION << LL_ENDL;
-		//return false;
-	}
-
-	U32 fmod_flags = 0x0;
-
-#if LL_WINDOWS
-	// Windows needs to know which window is frontmost.
-	// This must be called before FSOUND_Init() per the FMOD docs.
-	// This could be used to let FMOD handle muting when we lose focus,
-	// but we don't actually want to do that because we want to distinguish
-	// between minimized and not-focused states.
-	if (!FSOUND_SetHWND(userdata))
-	{
-		LL_WARNS("AppInit") << "Error setting FMOD window: "
-			<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
-		return false;
-	}
-	// Play audio when we don't have focus.
-	// (For example, IM client on top of us.)
-	// This means we also try to play audio when minimized,
-	// so we manually handle muting in that case. JC
-	fmod_flags |= FSOUND_INIT_GLOBALFOCUS;
-#endif
-
-#if LL_LINUX
-	// initialize the FMOD engine
-
-	// This is a hack to use only FMOD's basic FPU mixer
-	// when the LL_VALGRIND environmental variable is set,
-	// otherwise valgrind will fall over on FMOD's MMX detection
-	if (getenv("LL_VALGRIND"))		/*Flawfinder: ignore*/
-	{
-		LL_INFOS("AppInit") << "Pacifying valgrind in FMOD init." << LL_ENDL;
-		FSOUND_SetMixer(FSOUND_MIXER_QUALITY_FPU);
-	}
-
-	// If we don't set an output method, Linux FMOD always
-	// decides on OSS and fails otherwise.  So we'll manually
-	// try ESD, then OSS, then ALSA.
-	// Why this order?  See SL-13250, but in short, OSS emulated
-	// on top of ALSA is ironically more reliable than raw ALSA.
-	// Ack, and ESD has more reliable failure modes - but has worse
-	// latency - than all of them, so wins for now.
-	bool audio_ok = false;
-
-	if (!audio_ok)
-	{
-		if (NULL == getenv("LL_BAD_FMOD_ESD")) /*Flawfinder: ignore*/
-		{
-			LL_DEBUGS("AppInit") << "Trying ESD audio output..." << LL_ENDL;
-			if(FSOUND_SetOutput(FSOUND_OUTPUT_ESD) &&
-			   FSOUND_Init(44100, num_channels, fmod_flags))
-			{
-				LL_DEBUGS("AppInit") << "ESD audio output initialized OKAY"
-					<< LL_ENDL;
-				audio_ok = true;
-			} else {
-				LL_WARNS("AppInit") << "ESD audio output FAILED to initialize: "
-					<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
-			}
-		} else {
-			LL_DEBUGS("AppInit") << "ESD audio output SKIPPED" << LL_ENDL;
-		}
-	}
-	if (!audio_ok)
-	{
-		if (NULL == getenv("LL_BAD_FMOD_OSS")) 	 /*Flawfinder: ignore*/
-		{
-			LL_DEBUGS("AppInit") << "Trying OSS audio output..."	<< LL_ENDL;
-			if(FSOUND_SetOutput(FSOUND_OUTPUT_OSS) &&
-			   FSOUND_Init(44100, num_channels, fmod_flags))
-			{
-				LL_DEBUGS("AppInit") << "OSS audio output initialized OKAY" << LL_ENDL;
-				audio_ok = true;
-			} else {
-				LL_WARNS("AppInit") << "OSS audio output FAILED to initialize: "
-					<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
-			}
-		} else {
-			LL_DEBUGS("AppInit") << "OSS audio output SKIPPED" << LL_ENDL;
-		}
-	}
-	if (!audio_ok)
-	{
-		if (NULL == getenv("LL_BAD_FMOD_ALSA"))		/*Flawfinder: ignore*/
-		{
-			LL_DEBUGS("AppInit") << "Trying ALSA audio output..." << LL_ENDL;
-			if(FSOUND_SetOutput(FSOUND_OUTPUT_ALSA) &&
-			   FSOUND_Init(44100, num_channels, fmod_flags))
-			{
-				LL_DEBUGS("AppInit") << "ALSA audio output initialized OKAY" << LL_ENDL;
-				audio_ok = true;
-			} else {
-				LL_WARNS("AppInit") << "ALSA audio output FAILED to initialize: "
-					<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
-			}
-		} else {
-			LL_DEBUGS("AppInit") << "OSS audio output SKIPPED" << LL_ENDL;
-		}
-	}
-	if (!audio_ok)
-	{
-		LL_WARNS("AppInit") << "Overall audio init failure." << LL_ENDL;
-		return false;
-	}
-
-	// On Linux, FMOD causes a SIGPIPE for some netstream error
-	// conditions (an FMOD bug); ignore SIGPIPE so it doesn't crash us.
-	// NOW FIXED in FMOD 3.x since 2006-10-01.
-	//signal(SIGPIPE, SIG_IGN);
-
-	// We're interested in logging which output method we
-	// ended up with, for QA purposes.
-	switch (FSOUND_GetOutput())
-	{
-	case FSOUND_OUTPUT_NOSOUND: LL_DEBUGS("AppInit") << "Audio output: NoSound" << LL_ENDL; break;
-	case FSOUND_OUTPUT_OSS:	LL_DEBUGS("AppInit") << "Audio output: OSS" << LL_ENDL; break;
-	case FSOUND_OUTPUT_ESD:	LL_DEBUGS("AppInit") << "Audio output: ESD" << LL_ENDL; break;
-	case FSOUND_OUTPUT_ALSA: LL_DEBUGS("AppInit") << "Audio output: ALSA" << LL_ENDL; break;
-	default: LL_INFOS("AppInit") << "Audio output: Unknown!" << LL_ENDL; break;
-	};
-
-#else // LL_LINUX
-
-	// initialize the FMOD engine
-	if (!FSOUND_Init(44100, num_channels, fmod_flags))
-	{
-		LL_WARNS("AppInit") << "Error initializing FMOD: "
-			<< FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
-		return false;
-	}
-	
-#endif
-
-	// set up our favourite FMOD-native streaming audio implementation if none has already been added
-	if (!getStreamingAudioImpl()) // no existing implementation added
-		setStreamingAudioImpl(new LLStreamingAudio_FMOD());
-
-	LL_DEBUGS("AppInit") << "LLAudioEngine_FMOD::init() FMOD initialized correctly" << LL_ENDL;
-
-	mInited = true;
-
-	return true;
-}
-
-
-std::string LLAudioEngine_FMOD::getDriverName(bool verbose)
-{
-	if (verbose)
-	{
-		F32 version = FSOUND_GetVersion();
-		return llformat("FMOD version %f", version);
-	}
-	else
-	{
-		return "FMOD";
-	}
-}
-
-
-void LLAudioEngine_FMOD::allocateListener(void)
-{	
-	mListenerp = (LLListener *) new LLListener_FMOD();
-	if (!mListenerp)
-	{
-		llwarns << "Listener creation failed" << llendl;
-	}
-}
-
-
-void LLAudioEngine_FMOD::shutdown()
-{
-	if (mWindDSP)
-	{
-		FSOUND_DSP_SetActive(mWindDSP,false);
-		FSOUND_DSP_Free(mWindDSP);
-	}
-
-	stopInternetStream();
-
-	LLAudioEngine::shutdown();
-	
-	llinfos << "LLAudioEngine_FMOD::shutdown() closing FMOD" << llendl;
-	FSOUND_Close();
-	llinfos << "LLAudioEngine_FMOD::shutdown() done closing FMOD" << llendl;
-
-	delete mListenerp;
-	mListenerp = NULL;
-}
-
-
-LLAudioBuffer * LLAudioEngine_FMOD::createBuffer()
-{
-	return new LLAudioBufferFMOD();
-}
-
-
-LLAudioChannel * LLAudioEngine_FMOD::createChannel()
-{
-	return new LLAudioChannelFMOD();
-}
-
-
-bool LLAudioEngine_FMOD::initWind()
-{
-	if (!mWindGen)
-	{
-		bool enable;
-		
-		switch (FSOUND_GetMixer())
-		{
-			case FSOUND_MIXER_MMXP5:
-			case FSOUND_MIXER_MMXP6:
-			case FSOUND_MIXER_QUALITY_MMXP5:
-			case FSOUND_MIXER_QUALITY_MMXP6:
-				enable = (typeid(MIXBUFFERFORMAT) == typeid(S16));
-				break;
-			case FSOUND_MIXER_BLENDMODE:
-				enable = (typeid(MIXBUFFERFORMAT) == typeid(S32));
-				break;
-			case FSOUND_MIXER_QUALITY_FPU:
-				enable = (typeid(MIXBUFFERFORMAT) == typeid(F32));
-				break;
-			default:
-				// FSOUND_GetMixer() does not return a valid mixer type on Darwin
-				LL_INFOS("AppInit") << "Unknown FMOD mixer type, assuming default" << LL_ENDL;
-				enable = true;
-				break;
-		}
-		
-		if (enable)
-		{
-			mWindGen = new LLWindGen<MIXBUFFERFORMAT>(FSOUND_GetOutputRate());
-		}
-		else
-		{
-			LL_WARNS("AppInit") << "Incompatible FMOD mixer type, wind noise disabled" << LL_ENDL;
-		}
-	}
-
-	mNextWindUpdate = 0.0;
-
-	if (mWindGen && !mWindDSP)
-	{
-		mWindDSP = FSOUND_DSP_Create(&windCallback, FSOUND_DSP_DEFAULTPRIORITY_CLEARUNIT + 20, mWindGen);
-	}
-	if (mWindDSP)
-	{
-		FSOUND_DSP_SetActive(mWindDSP, true);
-		return true;
-	}
-	
-	return false;
-}
-
-
-void LLAudioEngine_FMOD::cleanupWind()
-{
-	if (mWindDSP)
-	{
-		FSOUND_DSP_SetActive(mWindDSP, false);
-		FSOUND_DSP_Free(mWindDSP);
-		mWindDSP = NULL;
-	}
-
-	delete mWindGen;
-	mWindGen = NULL;
-}
-
-
-//-----------------------------------------------------------------------
-void LLAudioEngine_FMOD::updateWind(LLVector3 wind_vec, F32 camera_height_above_water)
-{
-	LLVector3 wind_pos;
-	F64 pitch;
-	F64 center_freq;
-
-	if (!mEnableWind)
-	{
-		return;
-	}
-	
-	if (mWindUpdateTimer.checkExpirationAndReset(LL_WIND_UPDATE_INTERVAL))
-	{
-		
-		// wind comes in as Linden coordinate (+X = forward, +Y = left, +Z = up)
-		// need to convert this to the conventional orientation DS3D and OpenAL use
-		// where +X = right, +Y = up, +Z = backwards
-
-		wind_vec.setVec(-wind_vec.mV[1], wind_vec.mV[2], -wind_vec.mV[0]);
-
-		// cerr << "Wind update" << endl;
-
-		pitch = 1.0 + mapWindVecToPitch(wind_vec);
-		center_freq = 80.0 * pow(pitch,2.5*(mapWindVecToGain(wind_vec)+1.0));
-		
-		mWindGen->mTargetFreq = (F32)center_freq;
-		mWindGen->mTargetGain = (F32)mapWindVecToGain(wind_vec) * mMaxWindGain;
-		mWindGen->mTargetPanGainR = (F32)mapWindVecToPan(wind_vec);
-  	}
-}
-
-/*
-//-----------------------------------------------------------------------
-void LLAudioEngine_FMOD::setSourceMinDistance(U16 source_num, F64 distance)
-{
-	if (!mInited)
-	{
-		return;
-	}
-	if (mBuffer[source_num])
-	{
-		mMinDistance[source_num] = (F32) distance;
-		if (!FSOUND_Sample_SetMinMaxDistance(mBuffer[source_num],mMinDistance[source_num], mMaxDistance[source_num]))
-		{
-			llwarns << "FMOD::setSourceMinDistance(" << source_num << "), error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
-		}
-	}
-}
-
-//-----------------------------------------------------------------------
-void LLAudioEngine_FMOD::setSourceMaxDistance(U16 source_num, F64 distance)
-{
-	if (!mInited)
-	{
-		return;
-	}
-	if (mBuffer[source_num])
-	{
-		mMaxDistance[source_num] = (F32) distance;
-		if (!FSOUND_Sample_SetMinMaxDistance(mBuffer[source_num],mMinDistance[source_num], mMaxDistance[source_num]))
-		{
-			llwarns << "FMOD::setSourceMaxDistance(" << source_num << "), error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
-		}
-	}
-}
-
-//-----------------------------------------------------------------------
-void LLAudioEngine_FMOD::get3DParams(S32 source_num, S32 *volume, S32 *freq, S32 *inside, S32 *outside, LLVector3 *orient, S32 *out_volume, F32 *min_dist, F32 *max_dist)
-{
-	*volume = 0;
-	*freq = 0;
-	*inside = 0;
-	*outside = 0;
-	*orient = LLVector3::zero;
-	*out_volume = 0;
-	*min_dist = 0.f;
-	*max_dist = 0.f;
-}
-
-*/
-
-
-//-----------------------------------------------------------------------
-void LLAudioEngine_FMOD::setInternalGain(F32 gain)
-{
-	if (!mInited)
-	{
-		return;
-	}
-
-	gain = llclamp( gain, 0.0f, 1.0f );
-	FSOUND_SetSFXMasterVolume( llround( 255.0f * gain ) );
-
-	LLStreamingAudioInterface *saimpl = getStreamingAudioImpl();
-	if ( saimpl )
-	{
-		// fmod likes its streaming audio channel gain re-asserted after
-		// master volume change.
-		saimpl->setGain(saimpl->getGain());
-	}
-}
-
-//
-// LLAudioChannelFMOD implementation
-//
-
-LLAudioChannelFMOD::LLAudioChannelFMOD() : LLAudioChannel(), mChannelID(0), mLastSamplePos(0)
-{
-}
-
-
-LLAudioChannelFMOD::~LLAudioChannelFMOD()
-{
-	cleanup();
-}
-
-
-bool LLAudioChannelFMOD::updateBuffer()
-{
-	if (LLAudioChannel::updateBuffer())
-	{
-		// Base class update returned true, which means that we need to actually
-		// set up the channel for a different buffer.
-
-		LLAudioBufferFMOD *bufferp = (LLAudioBufferFMOD *)mCurrentSourcep->getCurrentBuffer();
-
-		// Grab the FMOD sample associated with the buffer
-		FSOUND_SAMPLE *samplep = bufferp->getSample();
-		if (!samplep)
-		{
-			// This is bad, there should ALWAYS be a sample associated with a legit
-			// buffer.
-			llerrs << "No FMOD sample!" << llendl;
-			return false;
-		}
-
-
-		// Actually play the sound.  Start it off paused so we can do all the necessary
-		// setup.
-		mChannelID = FSOUND_PlaySoundEx(FSOUND_FREE, samplep, FSOUND_DSP_GetSFXUnit(), true);
-
-		//llinfos << "Setting up channel " << std::hex << mChannelID << std::dec << llendl;
-	}
-
-	// If we have a source for the channel, we need to update its gain.
-	if (mCurrentSourcep)
-	{
-		// SJB: warnings can spam and hurt framerate, disabling
-		if (!FSOUND_SetVolume(mChannelID, llround(getSecondaryGain() * mCurrentSourcep->getGain() * 255.0f)))
-		{
-// 			llwarns << "LLAudioChannelFMOD::updateBuffer error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
-		}
-		
-		if (!FSOUND_SetLoopMode(mChannelID, mCurrentSourcep->isLoop() ? FSOUND_LOOP_NORMAL : FSOUND_LOOP_OFF))
-		{
-// 			llwarns << "Channel " << mChannelID << "Source ID: " << mCurrentSourcep->getID()
-// 					<< " at " << mCurrentSourcep->getPositionGlobal() << llendl;
-// 			llwarns << "LLAudioChannelFMOD::updateBuffer error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
-		}
-	}
-
-	return true;
-}
-
-
-void LLAudioChannelFMOD::update3DPosition()
-{
-	if (!mChannelID)
-	{
-		// We're not actually a live channel (i.e., we're not playing back anything)
-		return;
-	}
-
-	LLAudioBufferFMOD *bufferp = (LLAudioBufferFMOD *)mCurrentBufferp;
-	if (!bufferp)
-	{
-		// We don't have a buffer associated with us (should really have been picked up
-		// by the above if.
-		return;
-	}
-
-	if (mCurrentSourcep->isAmbient())
-	{
-		// Ambient sound, don't need to do any positional updates.
-		bufferp->set3DMode(false);
-	}
-	else
-	{
-		// Localized sound.  Update the position and velocity of the sound.
-		bufferp->set3DMode(true);
-
-		LLVector3 float_pos;
-		float_pos.setVec(mCurrentSourcep->getPositionGlobal());
-		if (!FSOUND_3D_SetAttributes(mChannelID, float_pos.mV, mCurrentSourcep->getVelocity().mV))
-		{
-			LL_DEBUGS("FMOD") << "LLAudioChannelFMOD::update3DPosition error: " << FMOD_ErrorString(FSOUND_GetError()) << LL_ENDL;
-		}
-	}
-}
-
-
-void LLAudioChannelFMOD::updateLoop()
-{
-	if (!mChannelID)
-	{
-		// May want to clear up the loop/sample counters.
-		return;
-	}
-
-	//
-	// Hack:  We keep track of whether we looped or not by seeing when the
-	// sample position looks like it's going backwards.  Not reliable; may
-	// yield false negatives.
-	//
-	U32 cur_pos = FSOUND_GetCurrentPosition(mChannelID);
-	if (cur_pos < (U32)mLastSamplePos)
-	{
-		mLoopedThisFrame = true;
-	}
-	mLastSamplePos = cur_pos;
-}
-
-
-void LLAudioChannelFMOD::cleanup()
-{
-	if (!mChannelID)
-	{
-		//llinfos << "Aborting cleanup with no channelID." << llendl;
-		return;
-	}
-
-	//llinfos << "Cleaning up channel: " << mChannelID << llendl;
-	if (!FSOUND_StopSound(mChannelID))
-	{
-		LL_DEBUGS("FMOD") << "LLAudioChannelFMOD::cleanup error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
-	}
-
-	mCurrentBufferp = NULL;
-	mChannelID = 0;
-}
-
-
-void LLAudioChannelFMOD::play()
-{
-	if (!mChannelID)
-	{
-		llwarns << "Playing without a channelID, aborting" << llendl;
-		return;
-	}
-
-	if (!FSOUND_SetPaused(mChannelID, false))
-	{
-		llwarns << "LLAudioChannelFMOD::play error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
-	}
-	getSource()->setPlayedOnce(true);
-}
-
-
-void LLAudioChannelFMOD::playSynced(LLAudioChannel *channelp)
-{
-	LLAudioChannelFMOD *fmod_channelp = (LLAudioChannelFMOD*)channelp;
-	if (!(fmod_channelp->mChannelID && mChannelID))
-	{
-		// Don't have channels allocated to both the master and the slave
-		return;
-	}
-
-	U32 position = FSOUND_GetCurrentPosition(fmod_channelp->mChannelID) % mCurrentBufferp->getLength();
-	// Try to match the position of our sync master
-	if (!FSOUND_SetCurrentPosition(mChannelID, position))
-	{
-		llwarns << "LLAudioChannelFMOD::playSynced unable to set current position" << llendl;
-	}
-
-	// Start us playing
-	play();
-}
-
-
-bool LLAudioChannelFMOD::isPlaying()
-{
-	if (!mChannelID)
-	{
-		return false;
-	}
-
-	return FSOUND_IsPlaying(mChannelID) && (!FSOUND_GetPaused(mChannelID));
-}
-
-
-
-//
-// LLAudioBufferFMOD implementation
-//
-
-
-LLAudioBufferFMOD::LLAudioBufferFMOD()
-{
-	mSamplep = NULL;
-}
-
-
-LLAudioBufferFMOD::~LLAudioBufferFMOD()
-{
-	if (mSamplep)
-	{
-		// Clean up the associated FMOD sample if it exists.
-		FSOUND_Sample_Free(mSamplep);
-		mSamplep = NULL;
-	}
-}
-
-
-bool LLAudioBufferFMOD::loadWAV(const std::string& filename)
-{
-	// Try to open a wav file from disk.  This will eventually go away, as we don't
-	// really want to block doing this.
-	if (filename.empty())
-	{
-		// invalid filename, abort.
-		return false;
-	}
-
-	if (!LLAPRFile::isExist(filename, NULL, LL_APR_RPB))
-	{
-		// File not found, abort.
-		return false;
-	}
-	
-	if (mSamplep)
-	{
-		// If there's already something loaded in this buffer, clean it up.
-		FSOUND_Sample_Free(mSamplep);
-		mSamplep = NULL;
-	}
-
-	// Load up the wav file into an fmod sample
-#if LL_WINDOWS
-	// MikeS. - Loading the sound file manually and then handing it over to FMOD,
-	//	since FMOD uses posix IO internally,
-	// which doesn't work with unicode file paths.
-	LLFILE* sound_file = LLFile::fopen(filename,"rb");	/* Flawfinder: ignore */
-	if (sound_file)
-	{
-		fseek(sound_file,0,SEEK_END);
-		U32	file_length = ftell(sound_file);	//Find the length of the file by seeking to the end and getting the offset
-		size_t	read_count;
-		fseek(sound_file,0,SEEK_SET);	//Seek back to the beginning
-		char*	buffer = new char[file_length];
-		llassert(buffer);
-		read_count = fread((void*)buffer,file_length,1,sound_file);//Load it..
-		if(ferror(sound_file)==0 && (read_count == 1)){//No read error, and we got 1 chunk of our size...
-			unsigned int mode_flags = FSOUND_LOOP_NORMAL | FSOUND_LOADMEMORY;
-									//FSOUND_16BITS | FSOUND_MONO | FSOUND_LOADMEMORY | FSOUND_LOOP_NORMAL;
-			mSamplep = FSOUND_Sample_Load(FSOUND_UNMANAGED, buffer, mode_flags , 0, file_length);
-		}
-		delete[] buffer;
-		fclose(sound_file);
-	}
-#else
-	mSamplep = FSOUND_Sample_Load(FSOUND_UNMANAGED, filename.c_str(), FSOUND_LOOP_NORMAL, 0, 0);
-#endif
-
-	if (!mSamplep)
-	{
-		// We failed to load the file for some reason.
-		llwarns << "Could not load data '" << filename << "': "
-				<< FMOD_ErrorString(FSOUND_GetError()) << llendl;
-
-		//
-		// If we EVER want to load wav files provided by end users, we need
-		// to rethink this!
-		//
-		// file is probably corrupt - remove it.
-		LLFile::remove(filename);
-		return false;
-	}
-
-	// Everything went well, return true
-	return true;
-}
-
-
-U32 LLAudioBufferFMOD::getLength()
-{
-	if (!mSamplep)
-	{
-		return 0;
-	}
-
-	return FSOUND_Sample_GetLength(mSamplep);
-}
-
-
-void LLAudioBufferFMOD::set3DMode(bool use3d)
-{
-	U16 current_mode = FSOUND_Sample_GetMode(mSamplep);
-	
-	if (use3d)
-	{
-		if (!FSOUND_Sample_SetMode(mSamplep, (current_mode & (~FSOUND_2D))))
-		{
-			llwarns << "LLAudioBufferFMOD::set3DMode error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
-		}
-	}
-	else
-	{
-		if (!FSOUND_Sample_SetMode(mSamplep, current_mode | FSOUND_2D))
-		{
-			llwarns << "LLAudioBufferFMOD::set3DMode error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
-		}
-	}
-}
-
-
-void * F_CALLBACKAPI windCallback(void *originalbuffer, void *newbuffer, int length, void* userdata)
-{
-	// originalbuffer = fmod's original mixbuffer.
-	// newbuffer = the buffer passed from the previous DSP unit.
-	// length = length in samples at this mix time.
-	// userdata = user parameter passed through in FSOUND_DSP_Create.
-
-	LLWindGen<LLAudioEngine_FMOD::MIXBUFFERFORMAT> *windgen =
-		(LLWindGen<LLAudioEngine_FMOD::MIXBUFFERFORMAT> *)userdata;
-	
-	newbuffer = windgen->windGenerate((LLAudioEngine_FMOD::MIXBUFFERFORMAT *)newbuffer, length);
-
-	return newbuffer;
-}
diff --git a/indra/llaudio/llaudioengine_fmodex.cpp b/indra/llaudio/llaudioengine_fmodex.cpp
new file mode 100644
index 0000000000..fe6dedcd03
--- /dev/null
+++ b/indra/llaudio/llaudioengine_fmodex.cpp
@@ -0,0 +1,749 @@
+/** 
+ * @file audioengine_fmodex.cpp
+ * @brief Implementation of LLAudioEngine 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 "llstreamingaudio.h"
+#include "llstreamingaudio_fmodex.h"
+
+#include "llaudioengine_fmodex.h"
+#include "lllistener_fmodex.h"
+
+#include "llerror.h"
+#include "llmath.h"
+#include "llrand.h"
+
+#include "fmod.hpp"
+#include "fmod_errors.h"
+#include "lldir.h"
+#include "llapr.h"
+
+#include "sound_ids.h"
+
+FMOD_RESULT F_CALLBACK windCallback(FMOD_DSP_STATE *dsp_state, float *inbuffer, float *outbuffer, unsigned int length, int inchannels, int outchannels);
+
+FMOD::ChannelGroup *LLAudioEngine_FMODEX::mChannelGroups[LLAudioEngine::AUDIO_TYPE_COUNT] = {0};
+
+LLAudioEngine_FMODEX::LLAudioEngine_FMODEX(bool enable_profiler)
+{
+	mInited = false;
+	mWindGen = NULL;
+	mWindDSP = NULL;
+	mSystem = NULL;
+	mEnableProfiler = enable_profiler;
+}
+
+
+LLAudioEngine_FMODEX::~LLAudioEngine_FMODEX()
+{
+}
+
+
+inline bool Check_FMOD_Error(FMOD_RESULT result, const char *string)
+{
+	if(result == FMOD_OK)
+		return false;
+	llwarns << string << " Error: " << FMOD_ErrorString(result) << llendl;
+	return true;
+}
+
+void* F_STDCALL decode_alloc(unsigned int size, FMOD_MEMORY_TYPE type, const char *sourcestr)
+{
+	if(type & FMOD_MEMORY_STREAM_DECODE)
+	{
+		llinfos << "Decode buffer size: " << size << llendl;
+	}
+	else if(type & FMOD_MEMORY_STREAM_FILE)
+	{
+		llinfos << "Strean buffer size: " << size << llendl;
+	}
+	return new char[size];
+}
+void* F_STDCALL decode_realloc(void *ptr, unsigned int size, FMOD_MEMORY_TYPE type, const char *sourcestr)
+{
+	memset(ptr,0,size);
+	return ptr;
+}
+void F_STDCALL decode_dealloc(void *ptr, FMOD_MEMORY_TYPE type, const char *sourcestr)
+{
+	delete[] (char*)ptr;
+}
+
+bool LLAudioEngine_FMODEX::init(const S32 num_channels, void* userdata)
+{
+	U32 version;
+	FMOD_RESULT result;
+
+	LL_DEBUGS("AppInit") << "LLAudioEngine_FMODEX::init() initializing FMOD" << LL_ENDL;
+
+	//result = FMOD::Memory_Initialize(NULL, 0, &decode_alloc, &decode_realloc, &decode_dealloc, FMOD_MEMORY_STREAM_DECODE | FMOD_MEMORY_STREAM_FILE);
+	//if(Check_FMOD_Error(result, "FMOD::Memory_Initialize"))
+	//	return false;
+
+	result = FMOD::System_Create(&mSystem);
+	if(Check_FMOD_Error(result, "FMOD::System_Create"))
+		return false;
+
+	//will call LLAudioEngine_FMODEX::allocateListener, which needs a valid mSystem pointer.
+	LLAudioEngine::init(num_channels, userdata);	
+	
+	result = mSystem->getVersion(&version);
+	Check_FMOD_Error(result, "FMOD::System::getVersion");
+
+	if (version < FMOD_VERSION)
+	{
+		LL_WARNS("AppInit") << "Error : You are using the wrong FMOD Ex version (" << version
+			<< ")!  You should be using FMOD Ex" << FMOD_VERSION << LL_ENDL;
+	}
+
+	result = mSystem->setSoftwareFormat(44100, FMOD_SOUND_FORMAT_PCM16, 0, 0, FMOD_DSP_RESAMPLER_LINEAR);
+	Check_FMOD_Error(result,"FMOD::System::setSoftwareFormat");
+
+	// In this case, all sounds, PLUS wind and stream will be software.
+	result = mSystem->setSoftwareChannels(num_channels + 2);
+	Check_FMOD_Error(result,"FMOD::System::setSoftwareChannels");
+
+	U32 fmod_flags = FMOD_INIT_NORMAL;
+	if(mEnableProfiler)
+	{
+		fmod_flags |= FMOD_INIT_ENABLE_PROFILE;
+		mSystem->createChannelGroup("None", &mChannelGroups[AUDIO_TYPE_NONE]);
+		mSystem->createChannelGroup("SFX", &mChannelGroups[AUDIO_TYPE_SFX]);
+		mSystem->createChannelGroup("UI", &mChannelGroups[AUDIO_TYPE_UI]);
+		mSystem->createChannelGroup("Ambient", &mChannelGroups[AUDIO_TYPE_AMBIENT]);
+	}
+
+#if LL_LINUX
+	bool audio_ok = false;
+
+	if (!audio_ok)
+	{
+		if (NULL == getenv("LL_BAD_FMOD_PULSEAUDIO")) /*Flawfinder: ignore*/
+		{
+			LL_DEBUGS("AppInit") << "Trying PulseAudio audio output..." << LL_ENDL;
+			if(mSystem->setOutput(FMOD_OUTPUTTYPE_PULSEAUDIO) == FMOD_OK &&
+				(result = mSystem->init(num_channels + 2, fmod_flags, 0)) == FMOD_OK)
+			{
+				LL_DEBUGS("AppInit") << "PulseAudio output initialized OKAY"	<< LL_ENDL;
+				audio_ok = true;
+			}
+			else 
+			{
+				Check_FMOD_Error(result, "PulseAudio audio output FAILED to initialize");
+			}
+		} 
+		else 
+		{
+			LL_DEBUGS("AppInit") << "PulseAudio audio output SKIPPED" << LL_ENDL;
+		}	
+	}
+	if (!audio_ok)
+	{
+		if (NULL == getenv("LL_BAD_FMOD_ALSA"))		/*Flawfinder: ignore*/
+		{
+			LL_DEBUGS("AppInit") << "Trying ALSA audio output..." << LL_ENDL;
+			if(mSystem->setOutput(FMOD_OUTPUTTYPE_ALSA) == FMOD_OK &&
+			    (result = mSystem->init(num_channels + 2, fmod_flags, 0)) == FMOD_OK)
+			{
+				LL_DEBUGS("AppInit") << "ALSA audio output initialized OKAY" << LL_ENDL;
+				audio_ok = true;
+			} 
+			else 
+			{
+				Check_FMOD_Error(result, "ALSA audio output FAILED to initialize");
+			}
+		} 
+		else 
+		{
+			LL_DEBUGS("AppInit") << "ALSA audio output SKIPPED" << LL_ENDL;
+		}
+	}
+	if (!audio_ok)
+	{
+		if (NULL == getenv("LL_BAD_FMOD_OSS")) 	 /*Flawfinder: ignore*/
+		{
+			LL_DEBUGS("AppInit") << "Trying OSS audio output..." << LL_ENDL;
+			if(mSystem->setOutput(FMOD_OUTPUTTYPE_OSS) == FMOD_OK &&
+			    (result = mSystem->init(num_channels + 2, fmod_flags, 0)) == FMOD_OK)
+			{
+				LL_DEBUGS("AppInit") << "OSS audio output initialized OKAY" << LL_ENDL;
+				audio_ok = true;
+			}
+			else
+			{
+				Check_FMOD_Error(result, "OSS audio output FAILED to initialize");
+			}
+		}
+		else 
+		{
+			LL_DEBUGS("AppInit") << "OSS audio output SKIPPED" << LL_ENDL;
+		}
+	}
+	if (!audio_ok)
+	{
+		LL_WARNS("AppInit") << "Overall audio init failure." << LL_ENDL;
+		return false;
+	}
+
+	// We're interested in logging which output method we
+	// ended up with, for QA purposes.
+	FMOD_OUTPUTTYPE output_type;
+	mSystem->getOutput(&output_type);
+	switch (output_type)
+	{
+		case FMOD_OUTPUTTYPE_NOSOUND: 
+			LL_INFOS("AppInit") << "Audio output: NoSound" << LL_ENDL; break;
+		case FMOD_OUTPUTTYPE_PULSEAUDIO:	
+			LL_INFOS("AppInit") << "Audio output: PulseAudio" << LL_ENDL; break;
+		case FMOD_OUTPUTTYPE_ALSA: 
+			LL_INFOS("AppInit") << "Audio output: ALSA" << LL_ENDL; break;
+		case FMOD_OUTPUTTYPE_OSS:	
+			LL_INFOS("AppInit") << "Audio output: OSS" << LL_ENDL; break;
+		default:
+			LL_INFOS("AppInit") << "Audio output: Unknown!" << LL_ENDL; break;
+	};
+#else // LL_LINUX
+
+	// initialize the FMOD engine
+	result = mSystem->init( num_channels + 2, fmod_flags, 0);
+	if (result == FMOD_ERR_OUTPUT_CREATEBUFFER)
+	{
+		/*
+		Ok, the speaker mode selected isn't supported by this soundcard. Switch it
+		back to stereo...
+		*/
+		result = mSystem->setSpeakerMode(FMOD_SPEAKERMODE_STEREO);
+		Check_FMOD_Error(result,"Error falling back to stereo mode");
+		/*
+		... and re-init.
+		*/
+		result = mSystem->init( num_channels + 2, fmod_flags, 0);
+	}
+	if(Check_FMOD_Error(result, "Error initializing FMOD Ex"))
+		return false;
+#endif
+
+	// set up our favourite FMOD-native streaming audio implementation if none has already been added
+	if (!getStreamingAudioImpl()) // no existing implementation added
+		setStreamingAudioImpl(new LLStreamingAudio_FMODEX(mSystem));
+
+	LL_INFOS("AppInit") << "LLAudioEngine_FMODEX::init() FMOD Ex initialized correctly" << LL_ENDL;
+
+	int r_numbuffers, r_samplerate, r_channels, r_bits;
+	unsigned int r_bufferlength;
+	char r_name[256];
+	mSystem->getDSPBufferSize(&r_bufferlength, &r_numbuffers);
+	mSystem->getSoftwareFormat(&r_samplerate, NULL, &r_channels, NULL, NULL, &r_bits);
+	mSystem->getDriverInfo(0, r_name, 255, 0);
+	r_name[255] = '\0';
+	int latency = (int)(1000.0f * r_bufferlength * r_numbuffers / r_samplerate);
+
+	LL_INFOS("AppInit") << "FMOD device: "<< r_name << "\n"
+		<< "FMOD Ex parameters: " << r_samplerate << " Hz * " << r_channels << " * " <<r_bits <<" bit\n"
+		<< "\tbuffer " << r_bufferlength << " * " << r_numbuffers << " (" << latency <<"ms)" << LL_ENDL;
+
+	mInited = true;
+
+	return true;
+}
+
+
+std::string LLAudioEngine_FMODEX::getDriverName(bool verbose)
+{
+	llassert_always(mSystem);
+	if (verbose)
+	{
+		U32 version;
+		if(!Check_FMOD_Error(mSystem->getVersion(&version), "FMOD::System::getVersion"))
+		{
+			return llformat("FMOD Ex %1x.%02x.%02x", version >> 16, version >> 8 & 0x000000FF, version & 0x000000FF);
+		}
+	}
+	return "FMODEx";
+}
+
+
+void LLAudioEngine_FMODEX::allocateListener(void)
+{	
+	mListenerp = (LLListener *) new LLListener_FMODEX(mSystem);
+	if (!mListenerp)
+	{
+		llwarns << "Listener creation failed" << llendl;
+	}
+}
+
+
+void LLAudioEngine_FMODEX::shutdown()
+{
+	stopInternetStream();
+
+	llinfos << "About to LLAudioEngine::shutdown()" << llendl;
+	LLAudioEngine::shutdown();
+	
+	llinfos << "LLAudioEngine_FMODEX::shutdown() closing FMOD Ex" << llendl;
+	if ( mSystem ) // speculative fix for MAINT-2657
+	{
+		mSystem->close();
+		mSystem->release();
+	}
+	llinfos << "LLAudioEngine_FMODEX::shutdown() done closing FMOD Ex" << llendl;
+
+	delete mListenerp;
+	mListenerp = NULL;
+}
+
+
+LLAudioBuffer * LLAudioEngine_FMODEX::createBuffer()
+{
+	return new LLAudioBufferFMODEX(mSystem);
+}
+
+
+LLAudioChannel * LLAudioEngine_FMODEX::createChannel()
+{
+	return new LLAudioChannelFMODEX(mSystem);
+}
+
+bool LLAudioEngine_FMODEX::initWind()
+{
+	mNextWindUpdate = 0.0;
+
+	if (!mWindDSP)
+	{
+		FMOD_DSP_DESCRIPTION dspdesc;
+		memset(&dspdesc, 0, sizeof(FMOD_DSP_DESCRIPTION));	//Set everything to zero
+		strncpy(dspdesc.name,"Wind Unit", sizeof(dspdesc.name));	//Set name to "Wind Unit"
+		dspdesc.channels=2;
+		dspdesc.read = &windCallback; //Assign callback.
+		if(Check_FMOD_Error(mSystem->createDSP(&dspdesc, &mWindDSP), "FMOD::createDSP"))
+			return false;
+
+		if(mWindGen)
+			delete mWindGen;
+	
+		float frequency = 44100;
+		mWindDSP->getDefaults(&frequency,0,0,0);
+		mWindGen = new LLWindGen<MIXBUFFERFORMAT>((U32)frequency);
+		mWindDSP->setUserData((void*)mWindGen);
+	}
+
+	if (mWindDSP)
+	{
+		mSystem->playDSP(FMOD_CHANNEL_FREE, mWindDSP, false, 0);
+		return true;
+	}
+	return false;
+}
+
+
+void LLAudioEngine_FMODEX::cleanupWind()
+{
+	if (mWindDSP)
+	{
+		mWindDSP->remove();
+		mWindDSP->release();
+		mWindDSP = NULL;
+	}
+
+	delete mWindGen;
+	mWindGen = NULL;
+}
+
+
+//-----------------------------------------------------------------------
+void LLAudioEngine_FMODEX::updateWind(LLVector3 wind_vec, F32 camera_height_above_water)
+{
+	LLVector3 wind_pos;
+	F64 pitch;
+	F64 center_freq;
+
+	if (!mEnableWind)
+	{
+		return;
+	}
+	
+	if (mWindUpdateTimer.checkExpirationAndReset(LL_WIND_UPDATE_INTERVAL))
+	{
+		
+		// wind comes in as Linden coordinate (+X = forward, +Y = left, +Z = up)
+		// need to convert this to the conventional orientation DS3D and OpenAL use
+		// where +X = right, +Y = up, +Z = backwards
+
+		wind_vec.setVec(-wind_vec.mV[1], wind_vec.mV[2], -wind_vec.mV[0]);
+
+		// cerr << "Wind update" << endl;
+
+		pitch = 1.0 + mapWindVecToPitch(wind_vec);
+		center_freq = 80.0 * pow(pitch,2.5*(mapWindVecToGain(wind_vec)+1.0));
+		
+		mWindGen->mTargetFreq = (F32)center_freq;
+		mWindGen->mTargetGain = (F32)mapWindVecToGain(wind_vec) * mMaxWindGain;
+		mWindGen->mTargetPanGainR = (F32)mapWindVecToPan(wind_vec);
+  	}
+}
+
+//-----------------------------------------------------------------------
+void LLAudioEngine_FMODEX::setInternalGain(F32 gain)
+{
+	if (!mInited)
+	{
+		return;
+	}
+
+	gain = llclamp( gain, 0.0f, 1.0f );
+
+	FMOD::ChannelGroup *master_group;
+	mSystem->getMasterChannelGroup(&master_group);
+
+	master_group->setVolume(gain);
+
+	LLStreamingAudioInterface *saimpl = getStreamingAudioImpl();
+	if ( saimpl )
+	{
+		// fmod likes its streaming audio channel gain re-asserted after
+		// master volume change.
+		saimpl->setGain(saimpl->getGain());
+	}
+}
+
+//
+// LLAudioChannelFMODEX implementation
+//
+
+LLAudioChannelFMODEX::LLAudioChannelFMODEX(FMOD::System *system) : LLAudioChannel(), mSystemp(system), mChannelp(NULL), mLastSamplePos(0)
+{
+}
+
+
+LLAudioChannelFMODEX::~LLAudioChannelFMODEX()
+{
+	cleanup();
+}
+
+bool LLAudioChannelFMODEX::updateBuffer()
+{
+	if (LLAudioChannel::updateBuffer())
+	{
+		// Base class update returned true, which means that we need to actually
+		// set up the channel for a different buffer.
+
+		LLAudioBufferFMODEX *bufferp = (LLAudioBufferFMODEX *)mCurrentSourcep->getCurrentBuffer();
+
+		// Grab the FMOD sample associated with the buffer
+		FMOD::Sound *soundp = bufferp->getSound();
+		if (!soundp)
+		{
+			// This is bad, there should ALWAYS be a sound associated with a legit
+			// buffer.
+			llerrs << "No FMOD sound!" << llendl;
+			return false;
+		}
+
+
+		// Actually play the sound.  Start it off paused so we can do all the necessary
+		// setup.
+		if(!mChannelp)
+		{
+			FMOD_RESULT result = getSystem()->playSound(FMOD_CHANNEL_FREE, soundp, true, &mChannelp);
+			Check_FMOD_Error(result, "FMOD::System::playSound");
+		}
+
+		//llinfos << "Setting up channel " << std::hex << mChannelID << std::dec << llendl;
+	}
+
+	// If we have a source for the channel, we need to update its gain.
+	if (mCurrentSourcep)
+	{
+		// SJB: warnings can spam and hurt framerate, disabling
+		//FMOD_RESULT result;
+
+		mChannelp->setVolume(getSecondaryGain() * mCurrentSourcep->getGain());
+		//Check_FMOD_Error(result, "FMOD::Channel::setVolume");
+
+		mChannelp->setMode(mCurrentSourcep->isLoop() ? FMOD_LOOP_NORMAL : FMOD_LOOP_OFF);
+		/*if(Check_FMOD_Error(result, "FMOD::Channel::setMode"))
+		{
+			S32 index;
+			mChannelp->getIndex(&index);
+ 			llwarns << "Channel " << index << "Source ID: " << mCurrentSourcep->getID()
+ 					<< " at " << mCurrentSourcep->getPositionGlobal() << llendl;		
+		}*/
+	}
+
+	return true;
+}
+
+
+void LLAudioChannelFMODEX::update3DPosition()
+{
+	if (!mChannelp)
+	{
+		// We're not actually a live channel (i.e., we're not playing back anything)
+		return;
+	}
+
+	LLAudioBufferFMODEX  *bufferp = (LLAudioBufferFMODEX  *)mCurrentBufferp;
+	if (!bufferp)
+	{
+		// We don't have a buffer associated with us (should really have been picked up
+		// by the above if.
+		return;
+	}
+
+	if (mCurrentSourcep->isAmbient())
+	{
+		// Ambient sound, don't need to do any positional updates.
+		set3DMode(false);
+	}
+	else
+	{
+		// Localized sound.  Update the position and velocity of the sound.
+		set3DMode(true);
+
+		LLVector3 float_pos;
+		float_pos.setVec(mCurrentSourcep->getPositionGlobal());
+		FMOD_RESULT result = mChannelp->set3DAttributes((FMOD_VECTOR*)float_pos.mV, (FMOD_VECTOR*)mCurrentSourcep->getVelocity().mV);
+		Check_FMOD_Error(result, "FMOD::Channel::set3DAttributes");
+	}
+}
+
+
+void LLAudioChannelFMODEX::updateLoop()
+{
+	if (!mChannelp)
+	{
+		// May want to clear up the loop/sample counters.
+		return;
+	}
+
+	//
+	// Hack:  We keep track of whether we looped or not by seeing when the
+	// sample position looks like it's going backwards.  Not reliable; may
+	// yield false negatives.
+	//
+	U32 cur_pos;
+	mChannelp->getPosition(&cur_pos,FMOD_TIMEUNIT_PCMBYTES);
+
+	if (cur_pos < (U32)mLastSamplePos)
+	{
+		mLoopedThisFrame = true;
+	}
+	mLastSamplePos = cur_pos;
+}
+
+
+void LLAudioChannelFMODEX::cleanup()
+{
+	if (!mChannelp)
+	{
+		//llinfos << "Aborting cleanup with no channel handle." << llendl;
+		return;
+	}
+
+	//llinfos << "Cleaning up channel: " << mChannelID << llendl;
+	Check_FMOD_Error(mChannelp->stop(),"FMOD::Channel::stop");
+
+	mCurrentBufferp = NULL;
+	mChannelp = NULL;
+}
+
+
+void LLAudioChannelFMODEX::play()
+{
+	if (!mChannelp)
+	{
+		llwarns << "Playing without a channel handle, aborting" << llendl;
+		return;
+	}
+
+	Check_FMOD_Error(mChannelp->setPaused(false), "FMOD::Channel::pause");
+
+	getSource()->setPlayedOnce(true);
+
+	if(LLAudioEngine_FMODEX::mChannelGroups[getSource()->getType()])
+		mChannelp->setChannelGroup(LLAudioEngine_FMODEX::mChannelGroups[getSource()->getType()]);
+}
+
+
+void LLAudioChannelFMODEX::playSynced(LLAudioChannel *channelp)
+{
+	LLAudioChannelFMODEX *fmod_channelp = (LLAudioChannelFMODEX*)channelp;
+	if (!(fmod_channelp->mChannelp && mChannelp))
+	{
+		// Don't have channels allocated to both the master and the slave
+		return;
+	}
+
+	U32 cur_pos;
+	if(Check_FMOD_Error(mChannelp->getPosition(&cur_pos,FMOD_TIMEUNIT_PCMBYTES), "Unable to retrieve current position"))
+		return;
+
+	cur_pos %= mCurrentBufferp->getLength();
+	
+	// Try to match the position of our sync master
+	Check_FMOD_Error(mChannelp->setPosition(cur_pos,FMOD_TIMEUNIT_PCMBYTES),"Unable to set current position");
+
+	// Start us playing
+	play();
+}
+
+
+bool LLAudioChannelFMODEX::isPlaying()
+{
+	if (!mChannelp)
+	{
+		return false;
+	}
+
+	bool paused, playing;
+	mChannelp->getPaused(&paused);
+	mChannelp->isPlaying(&playing);
+	return !paused && playing;
+}
+
+
+//
+// LLAudioChannelFMODEX implementation
+//
+
+
+LLAudioBufferFMODEX::LLAudioBufferFMODEX(FMOD::System *system) : mSystemp(system), mSoundp(NULL)
+{
+}
+
+
+LLAudioBufferFMODEX::~LLAudioBufferFMODEX()
+{
+	if(mSoundp)
+	{
+		mSoundp->release();
+		mSoundp = NULL;
+	}
+}
+
+
+bool LLAudioBufferFMODEX::loadWAV(const std::string& filename)
+{
+	// Try to open a wav file from disk.  This will eventually go away, as we don't
+	// really want to block doing this.
+	if (filename.empty())
+	{
+		// invalid filename, abort.
+		return false;
+	}
+
+	if (!LLAPRFile::isExist(filename, NULL, LL_APR_RPB))
+	{
+		// File not found, abort.
+		return false;
+	}
+	
+	if (mSoundp)
+	{
+		// If there's already something loaded in this buffer, clean it up.
+		mSoundp->release();
+		mSoundp = NULL;
+	}
+
+	FMOD_MODE base_mode = FMOD_LOOP_NORMAL | FMOD_SOFTWARE;
+	FMOD_CREATESOUNDEXINFO exinfo;
+	memset(&exinfo,0,sizeof(exinfo));
+	exinfo.cbsize = sizeof(exinfo);
+	exinfo.suggestedsoundtype = FMOD_SOUND_TYPE_WAV;	//Hint to speed up loading.
+	// Load up the wav file into an fmod sample
+#if LL_WINDOWS
+	FMOD_RESULT result = getSystem()->createSound((const char*)utf8str_to_utf16str(filename).c_str(), base_mode | FMOD_UNICODE, &exinfo, &mSoundp);
+#else
+	FMOD_RESULT result = getSystem()->createSound(filename.c_str(), base_mode, &exinfo, &mSoundp);
+#endif
+
+	if (result != FMOD_OK)
+	{
+		// We failed to load the file for some reason.
+		llwarns << "Could not load data '" << filename << "': " << FMOD_ErrorString(result) << llendl;
+
+		//
+		// If we EVER want to load wav files provided by end users, we need
+		// to rethink this!
+		//
+		// file is probably corrupt - remove it.
+		LLFile::remove(filename);
+		return false;
+	}
+
+	// Everything went well, return true
+	return true;
+}
+
+
+U32 LLAudioBufferFMODEX::getLength()
+{
+	if (!mSoundp)
+	{
+		return 0;
+	}
+
+	U32 length;
+	mSoundp->getLength(&length, FMOD_TIMEUNIT_PCMBYTES);
+	return length;
+}
+
+
+void LLAudioChannelFMODEX::set3DMode(bool use3d)
+{
+	FMOD_MODE current_mode;
+	if(mChannelp->getMode(&current_mode) != FMOD_OK)
+		return;
+	FMOD_MODE new_mode = current_mode;	
+	new_mode &= ~(use3d ? FMOD_2D : FMOD_3D);
+	new_mode |= use3d ? FMOD_3D : FMOD_2D;
+
+	if(current_mode != new_mode)
+	{
+		mChannelp->setMode(new_mode);
+	}
+}
+
+
+FMOD_RESULT F_CALLBACK windCallback(FMOD_DSP_STATE *dsp_state, float *originalbuffer, float *newbuffer, unsigned int length, int inchannels, int outchannels)
+{
+	// originalbuffer = fmod's original mixbuffer.
+	// newbuffer = the buffer passed from the previous DSP unit.
+	// length = length in samples at this mix time.
+	// userdata = user parameter passed through in FSOUND_DSP_Create.
+	
+	LLWindGen<LLAudioEngine_FMODEX::MIXBUFFERFORMAT> *windgen;
+	FMOD::DSP *thisdsp = (FMOD::DSP *)dsp_state->instance;
+
+	thisdsp->getUserData((void **)&windgen);
+	S32 channels, configwidth, configheight;
+	thisdsp->getInfo(0, 0, &channels, &configwidth, &configheight);
+	
+	windgen->windGenerate((LLAudioEngine_FMODEX::MIXBUFFERFORMAT *)newbuffer, length);
+
+	return FMOD_OK;
+}
diff --git a/indra/llaudio/llaudioengine_fmod.h b/indra/llaudio/llaudioengine_fmodex.h
index 4582a5d57e..415a9ed0ef 100644
--- a/indra/llaudio/llaudioengine_fmod.h
+++ b/indra/llaudio/llaudioengine_fmodex.h
@@ -1,7 +1,7 @@
 /** 
- * @file audioengine_fmod.h
- * @brief Definition of LLAudioEngine class abstracting the audio
- * support as a FMOD 3D implementation
+ * @file audioengine_fmodex.h
+ * @brief Definition of LLAudioEngine class abstracting the audio 
+ * support as a FMODEX implementation
  *
  * $LicenseInfo:firstyear=2002&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -25,26 +25,33 @@
  * $/LicenseInfo$
  */
 
-#ifndef LL_AUDIOENGINE_FMOD_H
-#define LL_AUDIOENGINE_FMOD_H
+#ifndef LL_AUDIOENGINE_FMODEX_H
+#define LL_AUDIOENGINE_FMODEX_H
 
 #include "llaudioengine.h"
-#include "lllistener_fmod.h"
 #include "llwindgen.h"
 
-#include "fmod.h"
-
-class LLAudioStreamManagerFMOD;
-
-class LLAudioEngine_FMOD : public LLAudioEngine 
+//Stubs
+class LLAudioStreamManagerFMODEX;
+namespace FMOD
+{
+	class System;
+	class Channel;
+	class ChannelGroup;
+	class Sound;
+	class DSP;
+}
+
+//Interfaces
+class LLAudioEngine_FMODEX : public LLAudioEngine 
 {
 public:
-	LLAudioEngine_FMOD();
-	virtual ~LLAudioEngine_FMOD();
+	LLAudioEngine_FMODEX(bool enable_profiler);
+	virtual ~LLAudioEngine_FMODEX();
 
 	// initialization/startup/shutdown
 	virtual bool init(const S32 num_channels, void *user_data);
-       	virtual std::string getDriverName(bool verbose);
+	virtual std::string getDriverName(bool verbose);
 	virtual void allocateListener();
 
 	virtual void shutdown();
@@ -54,38 +61,33 @@ public:
 
 	/*virtual*/void updateWind(LLVector3 direction, F32 camera_height_above_water);
 
-#if LL_DARWIN
-	typedef S32 MIXBUFFERFORMAT;
-#else
-	typedef S16 MIXBUFFERFORMAT;
-#endif
+	typedef F32 MIXBUFFERFORMAT;
 
+	FMOD::System *getSystem()				const {return mSystem;}
 protected:
 	/*virtual*/ LLAudioBuffer *createBuffer(); // Get a free buffer, or flush an existing one if you have to.
 	/*virtual*/ LLAudioChannel *createChannel(); // Create a new audio channel.
 
 	/*virtual*/ void setInternalGain(F32 gain);
-protected:
-	static signed char F_CALLBACKAPI callbackMetaData(char* name, char* value, void* userdata);
-
-	//F32 mMinDistance[MAX_BUFFERS];
-	//F32 mMaxDistance[MAX_BUFFERS];
 
 	bool mInited;
 
-	// On Windows, userdata is the HWND of the application window.
-	void* mUserData;
-
 	LLWindGen<MIXBUFFERFORMAT> *mWindGen;
-	FSOUND_DSPUNIT *mWindDSP;
+
+	FMOD::DSP *mWindDSP;
+	FMOD::System *mSystem;
+	bool mEnableProfiler;
+
+public:
+	static FMOD::ChannelGroup *mChannelGroups[LLAudioEngine::AUDIO_TYPE_COUNT];
 };
 
 
-class LLAudioChannelFMOD : public LLAudioChannel
+class LLAudioChannelFMODEX : public LLAudioChannel
 {
 public:
-	LLAudioChannelFMOD();
-	virtual ~LLAudioChannelFMOD();
+	LLAudioChannelFMODEX(FMOD::System *audioengine);
+	virtual ~LLAudioChannelFMODEX();
 
 protected:
 	/*virtual*/ void play();
@@ -97,28 +99,30 @@ protected:
 	/*virtual*/ void update3DPosition();
 	/*virtual*/ void updateLoop();
 
+	void set3DMode(bool use3d);
 protected:
-	int mChannelID;
+	FMOD::System *getSystem()	const {return mSystemp;}
+	FMOD::System *mSystemp;
+	FMOD::Channel *mChannelp;
 	S32 mLastSamplePos;
 };
 
 
-class LLAudioBufferFMOD : public LLAudioBuffer
+class LLAudioBufferFMODEX : public LLAudioBuffer
 {
 public:
-	LLAudioBufferFMOD();
-	virtual ~LLAudioBufferFMOD();
+	LLAudioBufferFMODEX(FMOD::System *audioengine);
+	virtual ~LLAudioBufferFMODEX();
 
 	/*virtual*/ bool loadWAV(const std::string& filename);
 	/*virtual*/ U32 getLength();
-	friend class LLAudioChannelFMOD;
-
-	void set3DMode(bool use3d);
-protected:
-	FSOUND_SAMPLE *getSample()	{ return mSamplep; }
+	friend class LLAudioChannelFMODEX;
 protected:
-	FSOUND_SAMPLE *mSamplep;
+	FMOD::System *getSystem()	const {return mSystemp;}
+	FMOD::System *mSystemp;
+	FMOD::Sound *getSound()		const{ return mSoundp; }
+	FMOD::Sound *mSoundp;
 };
 
 
-#endif // LL_AUDIOENGINE_FMOD_H
+#endif // LL_AUDIOENGINE_FMODEX_H
diff --git a/indra/llaudio/llaudioengine_openal.cpp b/indra/llaudio/llaudioengine_openal.cpp
index 34a057dcc0..34a057dcc0 100644..100755
--- a/indra/llaudio/llaudioengine_openal.cpp
+++ b/indra/llaudio/llaudioengine_openal.cpp
diff --git a/indra/llaudio/llaudioengine_openal.h b/indra/llaudio/llaudioengine_openal.h
index 6639d9dfe6..6639d9dfe6 100644..100755
--- a/indra/llaudio/llaudioengine_openal.h
+++ b/indra/llaudio/llaudioengine_openal.h
diff --git a/indra/llaudio/lllistener.cpp b/indra/llaudio/lllistener.cpp
index df2366c8c2..df2366c8c2 100644..100755
--- a/indra/llaudio/lllistener.cpp
+++ b/indra/llaudio/lllistener.cpp
diff --git a/indra/llaudio/lllistener.h b/indra/llaudio/lllistener.h
index 41836bf039..41836bf039 100644..100755
--- a/indra/llaudio/lllistener.h
+++ b/indra/llaudio/lllistener.h
diff --git a/indra/llaudio/lllistener_ds3d.h b/indra/llaudio/lllistener_ds3d.h
index 9150ccd5b9..9150ccd5b9 100644..100755
--- a/indra/llaudio/lllistener_ds3d.h
+++ b/indra/llaudio/lllistener_ds3d.h
diff --git a/indra/llaudio/lllistener_fmod.cpp b/indra/llaudio/lllistener_fmodex.cpp
index 0138f4345e..2509a7aebc 100644
--- a/indra/llaudio/lllistener_fmod.cpp
+++ b/indra/llaudio/lllistener_fmodex.cpp
@@ -1,7 +1,7 @@
 /** 
- * @file listener_fmod.cpp
- * @brief implementation of LISTENER class abstracting the audio
- * support as a FMOD 3D implementation (windows only)
+ * @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
@@ -27,24 +27,25 @@
 
 #include "linden_common.h"
 #include "llaudioengine.h"
-#include "lllistener_fmod.h"
-#include "fmod.h"
+#include "lllistener_fmodex.h"
+#include "fmod.hpp"
 
 //-----------------------------------------------------------------------
 // constructor
 //-----------------------------------------------------------------------
-LLListener_FMOD::LLListener_FMOD()
+LLListener_FMODEX::LLListener_FMODEX(FMOD::System *system)
 {
+	mSystem = system;
 	init();
 }
 
 //-----------------------------------------------------------------------
-LLListener_FMOD::~LLListener_FMOD()
+LLListener_FMODEX::~LLListener_FMODEX()
 {
 }
 
 //-----------------------------------------------------------------------
-void LLListener_FMOD::init(void)
+void LLListener_FMODEX::init(void)
 {
 	// do inherited
 	LLListener::init();
@@ -53,31 +54,31 @@ void LLListener_FMOD::init(void)
 }
 
 //-----------------------------------------------------------------------
-void LLListener_FMOD::translate(LLVector3 offset)
+void LLListener_FMODEX::translate(LLVector3 offset)
 {
 	LLListener::translate(offset);
 
-	FSOUND_3D_Listener_SetAttributes(mPosition.mV, NULL, mListenAt.mV[0],mListenAt.mV[1],mListenAt.mV[2], mListenUp.mV[0],mListenUp.mV[1],mListenUp.mV[2]);
+	mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)mPosition.mV, NULL, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV);
 }
 
 //-----------------------------------------------------------------------
-void LLListener_FMOD::setPosition(LLVector3 pos)
+void LLListener_FMODEX::setPosition(LLVector3 pos)
 {
 	LLListener::setPosition(pos);
 
-	FSOUND_3D_Listener_SetAttributes(pos.mV, NULL, mListenAt.mV[0],mListenAt.mV[1],mListenAt.mV[2], mListenUp.mV[0],mListenUp.mV[1],mListenUp.mV[2]);
+	mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)mPosition.mV, NULL, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV);
 }
 
 //-----------------------------------------------------------------------
-void LLListener_FMOD::setVelocity(LLVector3 vel)
+void LLListener_FMODEX::setVelocity(LLVector3 vel)
 {
 	LLListener::setVelocity(vel);
 
-	FSOUND_3D_Listener_SetAttributes(NULL, vel.mV, mListenAt.mV[0],mListenAt.mV[1],mListenAt.mV[2], mListenUp.mV[0],mListenUp.mV[1],mListenUp.mV[2]);
+	mSystem->set3DListenerAttributes(0, NULL, (FMOD_VECTOR*)mVelocity.mV, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV);
 }
 
 //-----------------------------------------------------------------------
-void LLListener_FMOD::orient(LLVector3 up, LLVector3 at)
+void LLListener_FMODEX::orient(LLVector3 up, LLVector3 at)
 {
 	LLListener::orient(up, at);
 
@@ -87,37 +88,46 @@ void LLListener_FMOD::orient(LLVector3 up, LLVector3 at)
 	// since DX is left-handed and we (LL, OpenGL, OpenAL) are right-handed
 	at = -at;
 
-	FSOUND_3D_Listener_SetAttributes(NULL, NULL, at.mV[0],at.mV[1],at.mV[2], up.mV[0],up.mV[1],up.mV[2]);
+	mSystem->set3DListenerAttributes(0, NULL, NULL, (FMOD_VECTOR*)at.mV, (FMOD_VECTOR*)up.mV);
 }
 
 //-----------------------------------------------------------------------
-void LLListener_FMOD::commitDeferredChanges()
+void LLListener_FMODEX::commitDeferredChanges()
 {
-	FSOUND_Update();
+	mSystem->update();
 }
 
 
-void LLListener_FMOD::setRolloffFactor(F32 factor)
+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;
-	FSOUND_3D_SetRolloffFactor(factor);
+	mSystem->set3DSettings(mDopplerFactor, 1.f, mRolloffFactor);
 }
 
 
-F32 LLListener_FMOD::getRolloffFactor()
+F32 LLListener_FMODEX::getRolloffFactor()
 {
 	return mRolloffFactor;
 }
 
 
-void LLListener_FMOD::setDopplerFactor(F32 factor)
+void LLListener_FMODEX::setDopplerFactor(F32 factor)
 {
 	mDopplerFactor = factor;
-	FSOUND_3D_SetDopplerFactor(factor);
+	mSystem->set3DSettings(mDopplerFactor, 1.f, mRolloffFactor);
 }
 
 
-F32 LLListener_FMOD::getDopplerFactor()
+F32 LLListener_FMODEX::getDopplerFactor()
 {
 	return mDopplerFactor;
 }
diff --git a/indra/llaudio/lllistener_fmod.h b/indra/llaudio/lllistener_fmodex.h
index 818da05d51..073b65d53a 100644
--- a/indra/llaudio/lllistener_fmod.h
+++ b/indra/llaudio/lllistener_fmodex.h
@@ -1,5 +1,5 @@
 /** 
- * @file listener_fmod.h
+ * @file listener_fmodex.h
  * @brief Description of LISTENER class abstracting the audio support
  * as an FMOD 3D implementation (windows and Linux)
  *
@@ -25,16 +25,23 @@
  * $/LicenseInfo$
  */
 
-#ifndef LL_LISTENER_FMOD_H
-#define LL_LISTENER_FMOD_H
+#ifndef LL_LISTENER_FMODEX_H
+#define LL_LISTENER_FMODEX_H
 
 #include "lllistener.h"
 
-class LLListener_FMOD : public LLListener
+//Stubs
+namespace FMOD
+{
+	class System;
+}
+
+//Interfaces
+class LLListener_FMODEX : public LLListener
 {
  public:  
-	LLListener_FMOD();
-	virtual ~LLListener_FMOD();
+	LLListener_FMODEX(FMOD::System *system);
+	virtual ~LLListener_FMODEX();
 	virtual void init();  
 
 	virtual void translate(LLVector3 offset);
@@ -47,8 +54,8 @@ class LLListener_FMOD : public LLListener
 	virtual F32 getDopplerFactor();
 	virtual void setRolloffFactor(F32 factor);
 	virtual F32 getRolloffFactor();
-
  protected:
+	 FMOD::System *mSystem;
 	 F32 mDopplerFactor;
 	 F32 mRolloffFactor;
 };
diff --git a/indra/llaudio/lllistener_openal.cpp b/indra/llaudio/lllistener_openal.cpp
index b3d4b02f09..b3d4b02f09 100644..100755
--- a/indra/llaudio/lllistener_openal.cpp
+++ b/indra/llaudio/lllistener_openal.cpp
diff --git a/indra/llaudio/lllistener_openal.h b/indra/llaudio/lllistener_openal.h
index cb163b11a5..cb163b11a5 100644..100755
--- a/indra/llaudio/lllistener_openal.h
+++ b/indra/llaudio/lllistener_openal.h
diff --git a/indra/llaudio/llstreamingaudio.h b/indra/llaudio/llstreamingaudio.h
index 20104af744..93479f9d59 100644..100755
--- a/indra/llaudio/llstreamingaudio.h
+++ b/indra/llaudio/llstreamingaudio.h
@@ -45,6 +45,8 @@ class LLStreamingAudioInterface
 	virtual void setGain(F32 vol) = 0;
 	virtual F32 getGain() = 0;
 	virtual std::string getURL() = 0;
+	virtual bool supportsAdjustableBufferSizes(){return false;}
+	virtual void setBufferSizes(U32 streambuffertime, U32 decodebuffertime){};
 };
 
 #endif // LL_STREAMINGAUDIO_H
diff --git a/indra/llaudio/llstreamingaudio_fmod.cpp b/indra/llaudio/llstreamingaudio_fmod.cpp
deleted file mode 100644
index bcdea771a7..0000000000
--- a/indra/llaudio/llstreamingaudio_fmod.cpp
+++ /dev/null
@@ -1,356 +0,0 @@
-/** 
- * @file streamingaudio_fmod.cpp
- * @brief LLStreamingAudio_FMOD implementation
- *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
- * 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 "llmath.h"
-
-#include "fmod.h"
-#include "fmod_errors.h"
-
-#include "llstreamingaudio_fmod.h"
-
-
-class LLAudioStreamManagerFMOD
-{
-public:
-	LLAudioStreamManagerFMOD(const std::string& url);
-	int	startStream();
-	bool stopStream(); // Returns true if the stream was successfully stopped.
-	bool ready();
-
-	const std::string& getURL() 	{ return mInternetStreamURL; }
-
-	int getOpenState();
-protected:
-	FSOUND_STREAM* mInternetStream;
-	bool mReady;
-
-	std::string mInternetStreamURL;
-};
-
-
-
-//---------------------------------------------------------------------------
-// Internet Streaming
-//---------------------------------------------------------------------------
-LLStreamingAudio_FMOD::LLStreamingAudio_FMOD() :
-	mCurrentInternetStreamp(NULL),
-	mFMODInternetStreamChannel(-1),
-	mGain(1.0f)
-{
-	// Number of milliseconds of audio to buffer for the audio card.
-	// Must be larger than the usual Second Life frame stutter time.
-	FSOUND_Stream_SetBufferSize(200);
-
-	// Here's where we set the size of the network buffer and some buffering 
-	// parameters.  In this case we want a network buffer of 16k, we want it 
-	// to prebuffer 40% of that when we first connect, and we want it 
-	// to rebuffer 80% of that whenever we encounter a buffer underrun.
-
-	// Leave the net buffer properties at the default.
-	//FSOUND_Stream_Net_SetBufferProperties(20000, 40, 80);
-}
-
-
-LLStreamingAudio_FMOD::~LLStreamingAudio_FMOD()
-{
-	// nothing interesting/safe to do.
-}
-
-
-void LLStreamingAudio_FMOD::start(const std::string& url)
-{
-	//if (!mInited)
-	//{
-	//	llwarns << "startInternetStream before audio initialized" << llendl;
-	//	return;
-	//}
-
-	// "stop" stream but don't clear url, etc. in case url == mInternetStreamURL
-	stop();
-
-	if (!url.empty())
-	{
-		llinfos << "Starting internet stream: " << url << llendl;
-		mCurrentInternetStreamp = new LLAudioStreamManagerFMOD(url);
-		mURL = url;
-	}
-	else
-	{
-		llinfos << "Set internet stream to null" << llendl;
-		mURL.clear();
-	}
-}
-
-
-void LLStreamingAudio_FMOD::update()
-{
-	// Kill dead internet streams, if possible
-	std::list<LLAudioStreamManagerFMOD *>::iterator iter;
-	for (iter = mDeadStreams.begin(); iter != mDeadStreams.end();)
-	{
-		LLAudioStreamManagerFMOD *streamp = *iter;
-		if (streamp->stopStream())
-		{
-			llinfos << "Closed dead stream" << llendl;
-			delete streamp;
-			mDeadStreams.erase(iter++);
-		}
-		else
-		{
-			iter++;
-		}
-	}
-
-	// Don't do anything if there are no streams playing
-	if (!mCurrentInternetStreamp)
-	{
-		return;
-	}
-
-	int open_state = mCurrentInternetStreamp->getOpenState();
-
-	if (!open_state)
-	{
-		// Stream is live
-
-		// start the stream if it's ready
-		if (mFMODInternetStreamChannel < 0)
-		{
-			mFMODInternetStreamChannel = mCurrentInternetStreamp->startStream();
-
-			if (mFMODInternetStreamChannel != -1)
-			{
-				// Reset volume to previously set volume
-				setGain(getGain());
-				FSOUND_SetPaused(mFMODInternetStreamChannel, false);
-			}
-		}
-	}
-		
-	switch(open_state)
-	{
-	default:
-	case 0:
-		// success
-		break;
-	case -1:
-		// stream handle is invalid
-		llwarns << "InternetStream - invalid handle" << llendl;
-		stop();
-		return;
-	case -2:
-		// opening
-		break;
-	case -3:
-		// failed to open, file not found, perhaps
-		llwarns << "InternetStream - failed to open" << llendl;
-		stop();
-		return;
-	case -4:
-		// connecting
-		break;
-	case -5:
-		// buffering
-		break;
-	}
-
-}
-
-void LLStreamingAudio_FMOD::stop()
-{
-	if (mFMODInternetStreamChannel != -1)
-	{
-		FSOUND_SetPaused(mFMODInternetStreamChannel, true);
-		FSOUND_SetPriority(mFMODInternetStreamChannel, 0);
-		mFMODInternetStreamChannel = -1;
-	}
-
-	if (mCurrentInternetStreamp)
-	{
-		llinfos << "Stopping internet stream: " << mCurrentInternetStreamp->getURL() << llendl;
-		if (mCurrentInternetStreamp->stopStream())
-		{
-			delete mCurrentInternetStreamp;
-		}
-		else
-		{
-			llwarns << "Pushing stream to dead list: " << mCurrentInternetStreamp->getURL() << llendl;
-			mDeadStreams.push_back(mCurrentInternetStreamp);
-		}
-		mCurrentInternetStreamp = NULL;
-		//mURL.clear();
-	}
-}
-
-void LLStreamingAudio_FMOD::pause(int pauseopt)
-{
-	if (pauseopt < 0)
-	{
-		pauseopt = mCurrentInternetStreamp ? 1 : 0;
-	}
-
-	if (pauseopt)
-	{
-		if (mCurrentInternetStreamp)
-		{
-			stop();
-		}
-	}
-	else
-	{
-		start(getURL());
-	}
-}
-
-
-// A stream is "playing" if it has been requested to start.  That
-// doesn't necessarily mean audio is coming out of the speakers.
-int LLStreamingAudio_FMOD::isPlaying()
-{
-	if (mCurrentInternetStreamp)
-	{
-		return 1; // Active and playing
-	}
-	else if (!mURL.empty())
-	{
-		return 2; // "Paused"
-	}
-	else
-	{
-		return 0;
-	}
-}
-
-
-F32 LLStreamingAudio_FMOD::getGain()
-{
-	return mGain;
-}
-
-
-std::string LLStreamingAudio_FMOD::getURL()
-{
-	return mURL;
-}
-
-
-void LLStreamingAudio_FMOD::setGain(F32 vol)
-{
-	mGain = vol;
-
-	if (mFMODInternetStreamChannel != -1)
-	{
-		vol = llclamp(vol * vol, 0.f, 1.f);
-		int vol_int = llround(vol * 255.f);
-		FSOUND_SetVolumeAbsolute(mFMODInternetStreamChannel, vol_int);
-	}
-}
-
-
-///////////////////////////////////////////////////////
-// manager of possibly-multiple internet audio streams
-
-LLAudioStreamManagerFMOD::LLAudioStreamManagerFMOD(const std::string& url) :
-	mInternetStream(NULL),
-	mReady(false)
-{
-	mInternetStreamURL = url;
-	mInternetStream = FSOUND_Stream_Open(url.c_str(), FSOUND_NORMAL | FSOUND_NONBLOCKING, 0, 0);
-	if (!mInternetStream)
-	{
-		llwarns << "Couldn't open fmod stream, error "
-			<< FMOD_ErrorString(FSOUND_GetError())
-			<< llendl;
-		mReady = false;
-		return;
-	}
-
-	mReady = true;
-}
-
-int LLAudioStreamManagerFMOD::startStream()
-{
-	// We need a live and opened stream before we try and play it.
-	if (!mInternetStream || getOpenState())
-	{
-		llwarns << "No internet stream to start playing!" << llendl;
-		return -1;
-	}
-
-	// Make sure the stream is set to 2D mode.
-	FSOUND_Stream_SetMode(mInternetStream, FSOUND_2D);
-
-	return FSOUND_Stream_PlayEx(FSOUND_FREE, mInternetStream, NULL, true);
-}
-
-bool LLAudioStreamManagerFMOD::stopStream()
-{
-	if (mInternetStream)
-	{
-		int read_percent = 0;
-		int status = 0;
-		int bitrate = 0;
-		unsigned int flags = 0x0;
-		FSOUND_Stream_Net_GetStatus(mInternetStream, &status, &read_percent, &bitrate, &flags);
-
-		bool close = true;
-		switch (status)
-		{
-		case FSOUND_STREAM_NET_CONNECTING:
-			close = false;
-			break;
-		case FSOUND_STREAM_NET_NOTCONNECTED:
-		case FSOUND_STREAM_NET_BUFFERING:
-		case FSOUND_STREAM_NET_READY:
-		case FSOUND_STREAM_NET_ERROR:
-		default:
-			close = true;
-		}
-
-		if (close)
-		{
-			FSOUND_Stream_Close(mInternetStream);
-			mInternetStream = NULL;
-			return true;
-		}
-		else
-		{
-			return false;
-		}
-	}
-	else
-	{
-		return true;
-	}
-}
-
-int LLAudioStreamManagerFMOD::getOpenState()
-{
-	int open_state = FSOUND_Stream_GetOpenState(mInternetStream);
-	return open_state;
-}
diff --git a/indra/llaudio/llstreamingaudio_fmodex.cpp b/indra/llaudio/llstreamingaudio_fmodex.cpp
new file mode 100644
index 0000000000..42f30aa1c4
--- /dev/null
+++ b/indra/llaudio/llstreamingaudio_fmodex.cpp
@@ -0,0 +1,392 @@
+/** 
+ * @file streamingaudio_fmodex.cpp
+ * @brief LLStreamingAudio_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 "llmath.h"
+
+#include "fmod.hpp"
+#include "fmod_errors.h"
+
+#include "llstreamingaudio_fmodex.h"
+
+
+class LLAudioStreamManagerFMODEX
+{
+public:
+	LLAudioStreamManagerFMODEX(FMOD::System *system, const std::string& url);
+	FMOD::Channel* startStream();
+	bool stopStream(); // Returns true if the stream was successfully stopped.
+	bool ready();
+
+	const std::string& getURL() 	{ return mInternetStreamURL; }
+
+	FMOD_OPENSTATE getOpenState(unsigned int* percentbuffered=NULL, bool* starving=NULL, bool* diskbusy=NULL);
+protected:
+	FMOD::System* mSystem;
+	FMOD::Channel* mStreamChannel;
+	FMOD::Sound* mInternetStream;
+	bool mReady;
+
+	std::string mInternetStreamURL;
+};
+
+
+
+//---------------------------------------------------------------------------
+// Internet Streaming
+//---------------------------------------------------------------------------
+LLStreamingAudio_FMODEX::LLStreamingAudio_FMODEX(FMOD::System *system) :
+	mSystem(system),
+	mCurrentInternetStreamp(NULL),
+	mFMODInternetStreamChannelp(NULL),
+	mGain(1.0f)
+{
+	// Number of milliseconds of audio to buffer for the audio card.
+	// Must be larger than the usual Second Life frame stutter time.
+	const U32 buffer_seconds = 10;		//sec
+	const U32 estimated_bitrate = 128;	//kbit/sec
+	mSystem->setStreamBufferSize(estimated_bitrate * buffer_seconds * 128/*bytes/kbit*/, FMOD_TIMEUNIT_RAWBYTES);
+
+	// Here's where we set the size of the network buffer and some buffering 
+	// parameters.  In this case we want a network buffer of 16k, we want it 
+	// to prebuffer 40% of that when we first connect, and we want it 
+	// to rebuffer 80% of that whenever we encounter a buffer underrun.
+
+	// Leave the net buffer properties at the default.
+	//FSOUND_Stream_Net_SetBufferProperties(20000, 40, 80);
+}
+
+
+LLStreamingAudio_FMODEX::~LLStreamingAudio_FMODEX()
+{
+	// nothing interesting/safe to do.
+}
+
+
+void LLStreamingAudio_FMODEX::start(const std::string& url)
+{
+	//if (!mInited)
+	//{
+	//	llwarns << "startInternetStream before audio initialized" << llendl;
+	//	return;
+	//}
+
+	// "stop" stream but don't clear url, etc. in case url == mInternetStreamURL
+	stop();
+
+	if (!url.empty())
+	{
+		llinfos << "Starting internet stream: " << url << llendl;
+		mCurrentInternetStreamp = new LLAudioStreamManagerFMODEX(mSystem,url);
+		mURL = url;
+	}
+	else
+	{
+		llinfos << "Set internet stream to null" << llendl;
+		mURL.clear();
+	}
+}
+
+
+void LLStreamingAudio_FMODEX::update()
+{
+	// Kill dead internet streams, if possible
+	std::list<LLAudioStreamManagerFMODEX *>::iterator iter;
+	for (iter = mDeadStreams.begin(); iter != mDeadStreams.end();)
+	{
+		LLAudioStreamManagerFMODEX *streamp = *iter;
+		if (streamp->stopStream())
+		{
+			llinfos << "Closed dead stream" << llendl;
+			delete streamp;
+			mDeadStreams.erase(iter++);
+		}
+		else
+		{
+			iter++;
+		}
+	}
+
+	// Don't do anything if there are no streams playing
+	if (!mCurrentInternetStreamp)
+	{
+		return;
+	}
+
+	unsigned int progress;
+	bool starving;
+	bool diskbusy;
+	FMOD_OPENSTATE open_state = mCurrentInternetStreamp->getOpenState(&progress, &starving, &diskbusy);
+
+	if (open_state == FMOD_OPENSTATE_READY)
+	{
+		// Stream is live
+
+		// start the stream if it's ready
+		if (!mFMODInternetStreamChannelp &&
+			(mFMODInternetStreamChannelp = mCurrentInternetStreamp->startStream()))
+		{
+			// Reset volume to previously set volume
+			setGain(getGain());
+			mFMODInternetStreamChannelp->setPaused(false);
+		}
+	}
+	else if(open_state == FMOD_OPENSTATE_ERROR)
+	{
+		stop();
+		return;
+	}
+
+	if(mFMODInternetStreamChannelp)
+	{
+		FMOD::Sound *sound = NULL;
+
+		if(mFMODInternetStreamChannelp->getCurrentSound(&sound) == FMOD_OK && sound)
+		{
+			FMOD_TAG tag;
+			S32 tagcount, dirtytagcount;
+
+			if(sound->getNumTags(&tagcount, &dirtytagcount) == FMOD_OK && dirtytagcount)
+			{
+				for(S32 i = 0; i < tagcount; ++i)
+				{
+					if(sound->getTag(NULL, i, &tag)!=FMOD_OK)
+						continue;
+
+					if (tag.type == FMOD_TAGTYPE_FMOD)
+					{
+						if (!strcmp(tag.name, "Sample Rate Change"))
+						{
+							llinfos << "Stream forced changing sample rate to " << *((float *)tag.data) << llendl;
+							mFMODInternetStreamChannelp->setFrequency(*((float *)tag.data));
+						}
+						continue;
+					}
+				}
+			}
+
+			if(starving)
+			{
+				bool paused = false;
+				mFMODInternetStreamChannelp->getPaused(&paused);
+				if(!paused)
+				{
+					llinfos << "Stream starvation detected! Pausing stream until buffer nearly full." << llendl;
+					llinfos << "  (diskbusy="<<diskbusy<<")" << llendl;
+					llinfos << "  (progress="<<progress<<")" << llendl;
+					mFMODInternetStreamChannelp->setPaused(true);
+				}
+			}
+			else if(progress > 80)
+			{
+				mFMODInternetStreamChannelp->setPaused(false);
+			}
+		}
+	}
+}
+
+void LLStreamingAudio_FMODEX::stop()
+{
+	if (mFMODInternetStreamChannelp)
+	{
+		mFMODInternetStreamChannelp->setPaused(true);
+		mFMODInternetStreamChannelp->setPriority(0);
+		mFMODInternetStreamChannelp = NULL;
+	}
+
+	if (mCurrentInternetStreamp)
+	{
+		llinfos << "Stopping internet stream: " << mCurrentInternetStreamp->getURL() << llendl;
+		if (mCurrentInternetStreamp->stopStream())
+		{
+			delete mCurrentInternetStreamp;
+		}
+		else
+		{
+			llwarns << "Pushing stream to dead list: " << mCurrentInternetStreamp->getURL() << llendl;
+			mDeadStreams.push_back(mCurrentInternetStreamp);
+		}
+		mCurrentInternetStreamp = NULL;
+		//mURL.clear();
+	}
+}
+
+void LLStreamingAudio_FMODEX::pause(int pauseopt)
+{
+	if (pauseopt < 0)
+	{
+		pauseopt = mCurrentInternetStreamp ? 1 : 0;
+	}
+
+	if (pauseopt)
+	{
+		if (mCurrentInternetStreamp)
+		{
+			stop();
+		}
+	}
+	else
+	{
+		start(getURL());
+	}
+}
+
+
+// A stream is "playing" if it has been requested to start.  That
+// doesn't necessarily mean audio is coming out of the speakers.
+int LLStreamingAudio_FMODEX::isPlaying()
+{
+	if (mCurrentInternetStreamp)
+	{
+		return 1; // Active and playing
+	}
+	else if (!mURL.empty())
+	{
+		return 2; // "Paused"
+	}
+	else
+	{
+		return 0;
+	}
+}
+
+
+F32 LLStreamingAudio_FMODEX::getGain()
+{
+	return mGain;
+}
+
+
+std::string LLStreamingAudio_FMODEX::getURL()
+{
+	return mURL;
+}
+
+
+void LLStreamingAudio_FMODEX::setGain(F32 vol)
+{
+	mGain = vol;
+
+	if (mFMODInternetStreamChannelp)
+	{
+		vol = llclamp(vol * vol, 0.f, 1.f);	//should vol be squared here?
+
+		mFMODInternetStreamChannelp->setVolume(vol);
+	}
+}
+
+///////////////////////////////////////////////////////
+// manager of possibly-multiple internet audio streams
+
+LLAudioStreamManagerFMODEX::LLAudioStreamManagerFMODEX(FMOD::System *system, const std::string& url) :
+	mSystem(system),
+	mStreamChannel(NULL),
+	mInternetStream(NULL),
+	mReady(false)
+{
+	mInternetStreamURL = url;
+
+	FMOD_RESULT result = mSystem->createStream(url.c_str(), FMOD_2D | FMOD_NONBLOCKING | FMOD_IGNORETAGS, 0, &mInternetStream);
+
+	if (result!= FMOD_OK)
+	{
+		llwarns << "Couldn't open fmod stream, error "
+			<< FMOD_ErrorString(result)
+			<< llendl;
+		mReady = false;
+		return;
+	}
+
+	mReady = true;
+}
+
+FMOD::Channel *LLAudioStreamManagerFMODEX::startStream()
+{
+	// We need a live and opened stream before we try and play it.
+	if (!mInternetStream || getOpenState() != FMOD_OPENSTATE_READY)
+	{
+		llwarns << "No internet stream to start playing!" << llendl;
+		return NULL;
+	}
+
+	if(mStreamChannel)
+		return mStreamChannel;	//Already have a channel for this stream.
+
+	mSystem->playSound(FMOD_CHANNEL_FREE, mInternetStream, true, &mStreamChannel);
+	return mStreamChannel;
+}
+
+bool LLAudioStreamManagerFMODEX::stopStream()
+{
+	if (mInternetStream)
+	{
+
+
+		bool close = true;
+		switch (getOpenState())
+		{
+		case FMOD_OPENSTATE_CONNECTING:
+			close = false;
+			break;
+		default:
+			close = true;
+		}
+
+		if (close)
+		{
+			mInternetStream->release();
+			mStreamChannel = NULL;
+			mInternetStream = NULL;
+			return true;
+		}
+		else
+		{
+			return false;
+		}
+	}
+	else
+	{
+		return true;
+	}
+}
+
+FMOD_OPENSTATE LLAudioStreamManagerFMODEX::getOpenState(unsigned int* percentbuffered, bool* starving, bool* diskbusy)
+{
+	FMOD_OPENSTATE state;
+	mInternetStream->getOpenState(&state, percentbuffered, starving, diskbusy);
+	return state;
+}
+
+void LLStreamingAudio_FMODEX::setBufferSizes(U32 streambuffertime, U32 decodebuffertime)
+{
+	mSystem->setStreamBufferSize(streambuffertime/1000*128*128, FMOD_TIMEUNIT_RAWBYTES);
+	FMOD_ADVANCEDSETTINGS settings;
+	memset(&settings,0,sizeof(settings));
+	settings.cbsize=sizeof(settings);
+	settings.defaultDecodeBufferSize = decodebuffertime;//ms
+	mSystem->setAdvancedSettings(&settings);
+}
diff --git a/indra/llaudio/llstreamingaudio_fmod.h b/indra/llaudio/llstreamingaudio_fmodex.h
index 9970f0d03b..1dee18ae7d 100644
--- a/indra/llaudio/llstreamingaudio_fmod.h
+++ b/indra/llaudio/llstreamingaudio_fmodex.h
@@ -1,9 +1,8 @@
 /** 
- * @file streamingaudio_fmod.h
- * @author Tofu Linden
- * @brief Definition of LLStreamingAudio_FMOD implementation
+ * @file streamingaudio_fmodex.h
+ * @brief Definition of LLStreamingAudio_FMODEX implementation
  *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
+ * $LicenseInfo:firstyear=2002&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
  * 
@@ -25,20 +24,28 @@
  * $/LicenseInfo$
  */
 
-#ifndef LL_STREAMINGAUDIO_FMOD_H
-#define LL_STREAMINGAUDIO_FMOD_H
+#ifndef LL_STREAMINGAUDIO_FMODEX_H
+#define LL_STREAMINGAUDIO_FMODEX_H
 
 #include "stdtypes.h" // from llcommon
 
 #include "llstreamingaudio.h"
+#include "lltimer.h"
 
-class LLAudioStreamManagerFMOD;
+//Stubs
+class LLAudioStreamManagerFMODEX;
+namespace FMOD
+{
+	class System;
+	class Channel;
+}
 
-class LLStreamingAudio_FMOD : public LLStreamingAudioInterface
+//Interfaces
+class LLStreamingAudio_FMODEX : public LLStreamingAudioInterface
 {
  public:
-	LLStreamingAudio_FMOD();
-	/*virtual*/ ~LLStreamingAudio_FMOD();
+	LLStreamingAudio_FMODEX(FMOD::System *system);
+	/*virtual*/ ~LLStreamingAudio_FMODEX();
 
 	/*virtual*/ void start(const std::string& url);
 	/*virtual*/ void stop();
@@ -49,14 +56,18 @@ class LLStreamingAudio_FMOD : public LLStreamingAudioInterface
 	/*virtual*/ F32 getGain();
 	/*virtual*/ std::string getURL();
 
+	/*virtual*/ bool supportsAdjustableBufferSizes(){return true;}
+	/*virtual*/ void setBufferSizes(U32 streambuffertime, U32 decodebuffertime);
 private:
-	LLAudioStreamManagerFMOD *mCurrentInternetStreamp;
-	int mFMODInternetStreamChannel;
-	std::list<LLAudioStreamManagerFMOD *> mDeadStreams;
+	FMOD::System *mSystem;
+
+	LLAudioStreamManagerFMODEX *mCurrentInternetStreamp;
+	FMOD::Channel *mFMODInternetStreamChannelp;
+	std::list<LLAudioStreamManagerFMODEX *> mDeadStreams;
 
 	std::string mURL;
 	F32 mGain;
 };
 
 
-#endif // LL_STREAMINGAUDIO_FMOD_H
+#endif // LL_STREAMINGAUDIO_FMODEX_H
diff --git a/indra/llaudio/llvorbisencode.cpp b/indra/llaudio/llvorbisencode.cpp
index 0e0c80a456..dfd5da12b3 100644..100755
--- a/indra/llaudio/llvorbisencode.cpp
+++ b/indra/llaudio/llvorbisencode.cpp
@@ -35,7 +35,7 @@
 #include "llapr.h"
 
 //#if LL_DARWIN
-// MBW -- XXX -- Getting rid of SecondLifeVorbis for now -- no fmod means no name collisions.
+// MBW -- XXX -- Getting rid of SecondLifeVorbis for now
 #if 0
 #include "VorbisFramework.h"
 
diff --git a/indra/llaudio/llvorbisencode.h b/indra/llaudio/llvorbisencode.h
index 6b22a2cb59..6b22a2cb59 100644..100755
--- a/indra/llaudio/llvorbisencode.h
+++ b/indra/llaudio/llvorbisencode.h
diff --git a/indra/llaudio/llwindgen.h b/indra/llaudio/llwindgen.h
index b9cecb60a1..719b0ecbf2 100644..100755
--- a/indra/llaudio/llwindgen.h
+++ b/indra/llaudio/llwindgen.h
@@ -27,6 +27,7 @@
 #define WINDGEN_H
 
 #include "llcommon.h"
+#include "llrand.h"
 
 template <class MIXBUFFERFORMAT_T>
 class LLWindGen
@@ -54,7 +55,9 @@ public:
 	}
 
 	const U32 getInputSamplingRate() { return mInputSamplingRate; }
-	
+	const F32 getNextSample();
+	const F32 getClampedSample(bool clamp, F32 sample);
+
 	// newbuffer = the buffer passed from the previous DSP unit.
 	// numsamples = length in samples-per-channel at this mix time.
 	// NOTE: generates L/R interleaved stereo
@@ -89,7 +92,7 @@ public:
 			
 			// Start with white noise
 			// This expression is fragile, rearrange it and it will break!
-			next_sample = (F32)rand() * (1.0f / (F32)(RAND_MAX / (U16_MAX / 8))) + (F32)(S16_MIN / 8);
+			next_sample = getNextSample();
 			
 			// Apply a pinking filter
 			// Magic numbers taken from PKE method at http://www.firstpr.com.au/dsp/pink-noise/
@@ -126,23 +129,13 @@ public:
 			for (U8 i=mSubSamples; i && numsamples; --i, --numsamples) 
 			{
 				mLastSample = mLastSample + delta;
-				S32	sample_right = (S32)(mLastSample * mCurrentPanGainR);
-				S32	sample_left = (S32)mLastSample - sample_right;
+				MIXBUFFERFORMAT_T	sample_right = (MIXBUFFERFORMAT_T)getClampedSample(clip, mLastSample * mCurrentPanGainR);
+				MIXBUFFERFORMAT_T	sample_left = (MIXBUFFERFORMAT_T)getClampedSample(clip, mLastSample - (F32)sample_right);
 				
-				if (!clip)
-				{
-					*cursamplep = (MIXBUFFERFORMAT_T)sample_left;
-					++cursamplep;
-					*cursamplep = (MIXBUFFERFORMAT_T)sample_right;
-					++cursamplep;
-				}
-				else
-				{
-					*cursamplep = (MIXBUFFERFORMAT_T)llclamp(sample_left, (S32)S16_MIN, (S32)S16_MAX);
-					++cursamplep;
-					*cursamplep = (MIXBUFFERFORMAT_T)llclamp(sample_right, (S32)S16_MIN, (S32)S16_MAX);
-					++cursamplep;
-				}
+				*cursamplep = sample_left;
+				++cursamplep;
+				*cursamplep = sample_right;
+				++cursamplep;
 			}
 		}
 		
@@ -173,4 +166,9 @@ private:
 	F32 mLastSample;
 };
 
+template<class T> inline const F32 LLWindGen<T>::getNextSample() { return (F32)rand() * (1.0f / (F32)(RAND_MAX / (U16_MAX / 8))) + (F32)(S16_MIN / 8); }
+template<> inline const F32 LLWindGen<F32>::getNextSample() { return ll_frand()-.5f; }
+template<class T> inline const F32 LLWindGen<T>::getClampedSample(bool clamp, F32 sample) { return clamp ? (F32)llclamp((S32)sample,(S32)S16_MIN,(S32)S16_MAX) : sample; }
+template<> inline const F32 LLWindGen<F32>::getClampedSample(bool clamp, F32 sample) { return sample; }
+
 #endif