diff options
Diffstat (limited to 'indra/llaudio/llaudioengine_fmod.cpp')
| -rwxr-xr-x | indra/llaudio/llaudioengine_fmod.cpp | 781 |
1 files changed, 0 insertions, 781 deletions
diff --git a/indra/llaudio/llaudioengine_fmod.cpp b/indra/llaudio/llaudioengine_fmod.cpp deleted file mode 100755 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; -} |