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Diffstat (limited to 'indra/llaudio/llaudioengine_fmodstudio.cpp')
| -rw-r--r-- | indra/llaudio/llaudioengine_fmodstudio.cpp | 756 |
1 files changed, 0 insertions, 756 deletions
diff --git a/indra/llaudio/llaudioengine_fmodstudio.cpp b/indra/llaudio/llaudioengine_fmodstudio.cpp deleted file mode 100644 index c6313ea289..0000000000 --- a/indra/llaudio/llaudioengine_fmodstudio.cpp +++ /dev/null @@ -1,756 +0,0 @@ -/** - * @file audioengine_fmodstudio.cpp - * @brief Implementation of LLAudioEngine class abstracting the audio - * support as a FMODSTUDIO implementation - * - * $LicenseInfo:firstyear=2020&license=viewerlgpl$ - * Second Life Viewer Source Code - * Copyright (C) 2020, 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_fmodstudio.h" - -#include "llaudioengine_fmodstudio.h" -#include "lllistener_fmodstudio.h" - -#include "llerror.h" -#include "llmath.h" -#include "llrand.h" - -#include "fmodstudio/fmod.hpp" -#include "fmodstudio/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_FMODSTUDIO::mChannelGroups[LLAudioEngine::AUDIO_TYPE_COUNT] = {0}; - -LLAudioEngine_FMODSTUDIO::LLAudioEngine_FMODSTUDIO(bool enable_profiler) -: mInited(false), - mWindGen(NULL), - mWindDSP(NULL), - mSystem(NULL), - mEnableProfiler(enable_profiler), - mWindDSPDesc(NULL) -{ -} - - -LLAudioEngine_FMODSTUDIO::~LLAudioEngine_FMODSTUDIO() -{ - // mWindDSPDesc, mWindGen and mWindDSP get cleaned up on cleanupWind in LLAudioEngine::shutdown() - // mSystem gets cleaned up at shutdown() -} - - -static inline bool Check_FMOD_Error(FMOD_RESULT result, const char *string) -{ - if (result == FMOD_OK) - return false; - LL_DEBUGS("FMOD") << string << " Error: " << FMOD_ErrorString(result) << LL_ENDL; - return true; -} - -bool LLAudioEngine_FMODSTUDIO::init(void* userdata, const std::string &app_title) -{ - U32 version; - FMOD_RESULT result; - - LL_DEBUGS("AppInit") << "LLAudioEngine_FMODSTUDIO::init() initializing FMOD" << LL_ENDL; - - result = FMOD::System_Create(&mSystem); - if (Check_FMOD_Error(result, "FMOD::System_Create")) - return false; - - //will call LLAudioEngine_FMODSTUDIO::allocateListener, which needs a valid mSystem pointer. - LLAudioEngine::init(userdata, app_title); - - result = mSystem->getVersion(&version); - Check_FMOD_Error(result, "FMOD::System::getVersion"); - - if (version < FMOD_VERSION) - { - LL_WARNS("AppInit") << "FMOD Studio version mismatch, actual: " << version - << " expected:" << FMOD_VERSION << LL_ENDL; - } - - // In this case, all sounds, PLUS wind and stream will be software. - result = mSystem->setSoftwareChannels(LL_MAX_AUDIO_CHANNELS + 2); - Check_FMOD_Error(result, "FMOD::System::setSoftwareChannels"); - - FMOD_ADVANCEDSETTINGS settings; - memset(&settings, 0, sizeof(settings)); - settings.cbSize = sizeof(FMOD_ADVANCEDSETTINGS); - settings.resamplerMethod = FMOD_DSP_RESAMPLER_LINEAR; - - result = mSystem->setAdvancedSettings(&settings); - Check_FMOD_Error(result, "FMOD::System::setAdvancedSettings"); - - // FMOD_INIT_THREAD_UNSAFE Disables thread safety for API calls. - // Only use this if FMOD is being called from a single thread, and if Studio API is not being used. - U32 fmod_flags = FMOD_INIT_NORMAL | FMOD_INIT_3D_RIGHTHANDED | FMOD_INIT_THREAD_UNSAFE; - if (mEnableProfiler) - { - fmod_flags |= FMOD_INIT_PROFILE_ENABLE; - } - -#if LL_LINUX - bool audio_ok = false; - - if (!audio_ok) - { - const char* env_string = getenv("LL_BAD_FMOD_PULSEAUDIO"); - if (NULL == env_string) - { - LL_DEBUGS("AppInit") << "Trying PulseAudio audio output..." << LL_ENDL; - if (mSystem->setOutput(FMOD_OUTPUTTYPE_PULSEAUDIO) == FMOD_OK && - (result = mSystem->init(LL_MAX_AUDIO_CHANNELS + 2, fmod_flags, const_cast<char*>(app_title.c_str()))) == 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) - { - const char* env_string = getenv("LL_BAD_FMOD_ALSA"); - if (NULL == env_string) - { - LL_DEBUGS("AppInit") << "Trying ALSA audio output..." << LL_ENDL; - if (mSystem->setOutput(FMOD_OUTPUTTYPE_ALSA) == FMOD_OK && - (result = mSystem->init(LL_MAX_AUDIO_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) - { - 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; - default: - LL_INFOS("AppInit") << "Audio output: Unknown!" << LL_ENDL; break; - }; -#else // LL_LINUX - - // initialize the FMOD engine - // number of channel in this case looks to be identiacal to number of max simultaneously - // playing objects and we can set practically any number - result = mSystem->init(LL_MAX_AUDIO_CHANNELS + 2, fmod_flags, 0); - if (Check_FMOD_Error(result, "Error initializing FMOD Studio with default settins, retrying with other format")) - { - result = mSystem->setSoftwareFormat(44100, FMOD_SPEAKERMODE_STEREO, 0/*- ignore*/); - if (Check_FMOD_Error(result, "Error setting sotware format. Can't init.")) - { - return false; - } - result = mSystem->init(LL_MAX_AUDIO_CHANNELS + 2, fmod_flags, 0); - } - if (Check_FMOD_Error(result, "Error initializing FMOD Studio")) - { - // If it fails here and (result == FMOD_ERR_OUTPUT_CREATEBUFFER), - // we can retry with other settings - return false; - } -#endif - - LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init() FMOD Studio initialized correctly" << LL_ENDL; - - int r_numbuffers, r_samplerate, r_channels; - unsigned int r_bufferlength; - char r_name[512]; - int latency = 100; - mSystem->getDSPBufferSize(&r_bufferlength, &r_numbuffers); - LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): r_bufferlength=" << r_bufferlength << " bytes" << LL_ENDL; - LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): r_numbuffers=" << r_numbuffers << LL_ENDL; - - mSystem->getDriverInfo(0, r_name, 511, NULL, &r_samplerate, NULL, &r_channels); - r_name[511] = '\0'; - LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): r_name=\"" << r_name << "\"" << LL_ENDL; - - if (r_samplerate != 0) - latency = (int)(1000.0f * r_bufferlength * r_numbuffers / r_samplerate); - LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): latency=" << latency << "ms" << LL_ENDL; - - mInited = true; - - LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): initialization complete." << LL_ENDL; - - return true; -} - - -std::string LLAudioEngine_FMODSTUDIO::getDriverName(bool verbose) -{ - llassert_always(mSystem); - if (verbose) - { - U32 version; - if (!Check_FMOD_Error(mSystem->getVersion(&version), "FMOD::System::getVersion")) - { - return llformat("FMOD Studio %1x.%02x.%02x", version >> 16, version >> 8 & 0x000000FF, version & 0x000000FF); - } - } - return "FMOD STUDIO"; -} - - -// create our favourite FMOD-native streaming audio implementation -LLStreamingAudioInterface *LLAudioEngine_FMODSTUDIO::createDefaultStreamingAudioImpl() const -{ - return new LLStreamingAudio_FMODSTUDIO(mSystem); -} - - -void LLAudioEngine_FMODSTUDIO::allocateListener(void) -{ - mListenerp = (LLListener *) new LLListener_FMODSTUDIO(mSystem); - if (!mListenerp) - { - LL_WARNS("FMOD") << "Listener creation failed" << LL_ENDL; - } -} - - -void LLAudioEngine_FMODSTUDIO::shutdown() -{ - stopInternetStream(); - - LL_INFOS("FMOD") << "About to LLAudioEngine::shutdown()" << LL_ENDL; - LLAudioEngine::shutdown(); - - LL_INFOS("FMOD") << "LLAudioEngine_FMODSTUDIO::shutdown() closing FMOD Studio" << LL_ENDL; - if (mSystem) - { - mSystem->close(); - mSystem->release(); - } - LL_INFOS("FMOD") << "LLAudioEngine_FMODSTUDIO::shutdown() done closing FMOD Studio" << LL_ENDL; - - delete mListenerp; - mListenerp = NULL; -} - - -LLAudioBuffer * LLAudioEngine_FMODSTUDIO::createBuffer() -{ - return new LLAudioBufferFMODSTUDIO(mSystem); -} - - -LLAudioChannel * LLAudioEngine_FMODSTUDIO::createChannel() -{ - return new LLAudioChannelFMODSTUDIO(mSystem); -} - -bool LLAudioEngine_FMODSTUDIO::initWind() -{ - mNextWindUpdate = 0.0; - - if (!mWindDSPDesc) - { - mWindDSPDesc = new FMOD_DSP_DESCRIPTION(); - } - - if (!mWindDSP) - { - memset(mWindDSPDesc, 0, sizeof(*mWindDSPDesc)); //Set everything to zero - strncpy(mWindDSPDesc->name, "Wind Unit", sizeof(mWindDSPDesc->name)); - mWindDSPDesc->pluginsdkversion = FMOD_PLUGIN_SDK_VERSION; - mWindDSPDesc->read = &windCallback; // Assign callback - may be called from arbitrary threads - if (Check_FMOD_Error(mSystem->createDSP(mWindDSPDesc, &mWindDSP), "FMOD::createDSP")) - return false; - - if (mWindGen) - delete mWindGen; - - int frequency = 44100; - - FMOD_SPEAKERMODE mode; - if (Check_FMOD_Error(mSystem->getSoftwareFormat(&frequency, &mode, nullptr), "FMOD::System::getSoftwareFormat")) - { - cleanupWind(); - return false; - } - - mWindGen = new LLWindGen<MIXBUFFERFORMAT>((U32)frequency); - - if (Check_FMOD_Error(mWindDSP->setUserData((void*)mWindGen), "FMOD::DSP::setUserData")) - { - cleanupWind(); - return false; - } - if (Check_FMOD_Error(mWindDSP->setChannelFormat(FMOD_CHANNELMASK_STEREO, 2, mode), "FMOD::DSP::setChannelFormat")) - { - cleanupWind(); - return false; - } - } - - // *TODO: Should this guard against multiple plays? - if (Check_FMOD_Error(mSystem->playDSP(mWindDSP, nullptr, false, nullptr), "FMOD::System::playDSP")) - { - cleanupWind(); - return false; - } - return true; -} - - -void LLAudioEngine_FMODSTUDIO::cleanupWind() -{ - if (mWindDSP) - { - FMOD::ChannelGroup* master_group = NULL; - if (!Check_FMOD_Error(mSystem->getMasterChannelGroup(&master_group), "FMOD::System::getMasterChannelGroup") - && master_group) - { - master_group->removeDSP(mWindDSP); - } - mWindDSP->release(); - mWindDSP = NULL; - } - - delete mWindDSPDesc; - mWindDSPDesc = NULL; - - delete mWindGen; - mWindGen = NULL; -} - - -//----------------------------------------------------------------------- -void LLAudioEngine_FMODSTUDIO::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_FMODSTUDIO::setInternalGain(F32 gain) -{ - if (!mInited) - { - return; - } - - gain = llclamp(gain, 0.0f, 1.0f); - - FMOD::ChannelGroup* master_group = NULL; - if (!Check_FMOD_Error(mSystem->getMasterChannelGroup(&master_group), "FMOD::System::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()); - } -} - -// -// LLAudioChannelFMODSTUDIO implementation -// - -LLAudioChannelFMODSTUDIO::LLAudioChannelFMODSTUDIO(FMOD::System *system) : LLAudioChannel(), mSystemp(system), mChannelp(NULL), mLastSamplePos(0) -{ -} - - -LLAudioChannelFMODSTUDIO::~LLAudioChannelFMODSTUDIO() -{ - cleanup(); -} - -bool LLAudioChannelFMODSTUDIO::updateBuffer() -{ - if (!mCurrentSourcep) - { - // This channel isn't associated with any source, nothing - // to be updated - return false; - } - - if (LLAudioChannel::updateBuffer()) - { - // Base class update returned true, which means that we need to actually - // set up the channel for a different buffer. - - LLAudioBufferFMODSTUDIO *bufferp = (LLAudioBufferFMODSTUDIO *)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. - LL_ERRS() << "No FMOD sound!" << LL_ENDL; - 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(soundp, NULL /*free channel?*/, true, &mChannelp); - Check_FMOD_Error(result, "FMOD::System::playSound"); - } - - // Setting up channel mChannelID - } - - // 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); - LL_WARNS() << "Channel " << index << "Source ID: " << mCurrentSourcep->getID() - << " at " << mCurrentSourcep->getPositionGlobal() << LL_ENDL; - }*/ - } - - return true; -} - - -void LLAudioChannelFMODSTUDIO::update3DPosition() -{ - if (!mChannelp) - { - // We're not actually a live channel (i.e., we're not playing back anything) - return; - } - - LLAudioBufferFMODSTUDIO *bufferp = (LLAudioBufferFMODSTUDIO *)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->isForcedPriority()) - { - // Prioritized UI and preview sounds 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 LLAudioChannelFMODSTUDIO::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 LLAudioChannelFMODSTUDIO::cleanup() -{ - if (!mChannelp) - { - // Aborting cleanup with no channel handle. - return; - } - - //Cleaning up channel mChannelID - Check_FMOD_Error(mChannelp->stop(), "FMOD::Channel::stop"); - - mCurrentBufferp = NULL; - mChannelp = NULL; -} - - -void LLAudioChannelFMODSTUDIO::play() -{ - if (!mChannelp) - { - LL_WARNS() << "Playing without a channel handle, aborting" << LL_ENDL; - return; - } - - Check_FMOD_Error(mChannelp->setPaused(false), "FMOD::Channel::pause"); - - getSource()->setPlayedOnce(true); - - if (LLAudioEngine_FMODSTUDIO::mChannelGroups[getSource()->getType()]) - mChannelp->setChannelGroup(LLAudioEngine_FMODSTUDIO::mChannelGroups[getSource()->getType()]); -} - - -void LLAudioChannelFMODSTUDIO::playSynced(LLAudioChannel *channelp) -{ - LLAudioChannelFMODSTUDIO *fmod_channelp = (LLAudioChannelFMODSTUDIO*)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 LLAudioChannelFMODSTUDIO::isPlaying() -{ - if (!mChannelp) - { - return false; - } - - bool paused, playing; - mChannelp->getPaused(&paused); - mChannelp->isPlaying(&playing); - return !paused && playing; -} - - -// -// LLAudioChannelFMODSTUDIO implementation -// - - -LLAudioBufferFMODSTUDIO::LLAudioBufferFMODSTUDIO(FMOD::System *system) : mSystemp(system), mSoundp(NULL) -{ -} - - -LLAudioBufferFMODSTUDIO::~LLAudioBufferFMODSTUDIO() -{ - if (mSoundp) - { - mSoundp->release(); - mSoundp = NULL; - } -} - - -bool LLAudioBufferFMODSTUDIO::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 (!gDirUtilp->fileExists(filename)) - { - // 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_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 (since 1.05 fmod studio expects everything in UTF-8) - FMOD_RESULT result = getSystem()->createSound(filename.c_str(), base_mode, &exinfo, &mSoundp); - - if (result != FMOD_OK) - { - // We failed to load the file for some reason. - LL_WARNS() << "Could not load data '" << filename << "': " << FMOD_ErrorString(result) << LL_ENDL; - - // - // 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 LLAudioBufferFMODSTUDIO::getLength() -{ - if (!mSoundp) - { - return 0; - } - - U32 length; - mSoundp->getLength(&length, FMOD_TIMEUNIT_PCMBYTES); - return length; -} - - -void LLAudioChannelFMODSTUDIO::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); - } -} - -// *NOTE: This is almost certainly being called on the mixer thread, -// not the main thread. May have implications for callees or audio -// engine shutdown. - -FMOD_RESULT F_CALLBACK windCallback(FMOD_DSP_STATE *dsp_state, float *inbuffer, float *outbuffer, unsigned int length, int inchannels, int *outchannels) -{ - // inbuffer = fmod's original mixbuffer. - // outbuffer = the buffer passed from the previous DSP unit. - // length = length in samples at this mix time. - - LLWindGen<LLAudioEngine_FMODSTUDIO::MIXBUFFERFORMAT> *windgen = NULL; - FMOD::DSP *thisdsp = (FMOD::DSP *)dsp_state->instance; - - thisdsp->getUserData((void **)&windgen); - - if (windgen) - { - windgen->windGenerate((LLAudioEngine_FMODSTUDIO::MIXBUFFERFORMAT *)outbuffer, length); - } - - return FMOD_OK; -} |