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Graham Madarasz authoredGraham Madarasz authored
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llaudioengine_fmodex.cpp 19.79 KiB
/**
* @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;
lldebugs << 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)
{
//LL_DEBUGS("FMODEX") << "Decode buffer size: " << size << llendl;
}
else if(type & FMOD_MEMORY_STREAM_FILE)
{
//LL_DEBUGS("FMODEX") << "Strean buffer size: " << size << llendl;
}
if (size > (1L << 24))
return NULL;
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;
// turn off non-error log spam to fmod.log (TODO: why do we even have an fmod.log if we don't link against log lib?)
FMOD::Debug_SetLevel(FMOD_DEBUG_LEVEL_ERROR);
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();
//LL_DEBUGS("FMODEX") << "About to LLAudioEngine::shutdown()" << llendl;
LLAudioEngine::shutdown();
//LL_DEBUGS("FMODEX") << "LLAudioEngine_FMODEX::shutdown() closing FMOD Ex" << llendl;
if ( mSystem ) // speculative fix for MAINT-2657
{
mSystem->close();
mSystem->release();
}
//LL_DEBUGS("FMODEX") << "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");
}
//LL_DEBUGS("FMODEX") << "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)
{
//LL_DEBUGS("FMODEX") << "Aborting cleanup with no channel handle." << llendl;
return;
}
//LL_DEBUGS("FMODEX") << "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(¤t_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;
}