/** * @file audioengine_fmod.cpp * @brief Implementation of LLAudioEngine class abstracting the audio support as a FMOD 3D implementation * * $LicenseInfo:firstyear=2002&license=viewergpl$ * * Copyright (c) 2002-2009, Linden Research, Inc. * * Second Life Viewer Source Code * The source code in this file ("Source Code") is provided by Linden Lab * to you under the terms of the GNU General Public License, version 2.0 * ("GPL"), unless you have obtained a separate licensing agreement * ("Other License"), formally executed by you and Linden Lab. Terms of * the GPL can be found in doc/GPL-license.txt in this distribution, or * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 * * There are special exceptions to the terms and conditions of the GPL as * it is applied to this Source Code. View the full text of the exception * in the file doc/FLOSS-exception.txt in this software distribution, or * online at * http://secondlifegrid.net/programs/open_source/licensing/flossexception * * By copying, modifying or distributing this software, you acknowledge * that you have read and understood your obligations described above, * and agree to abide by those obligations. * * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, * COMPLETENESS OR PERFORMANCE. * $/LicenseInfo$ */ #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); } FSOUND_DSPUNIT *gWindDSP = NULL; LLAudioEngine_FMOD::LLAudioEngine_FMOD() { mInited = false; mWindGen = 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 (gWindDSP) { FSOUND_DSP_SetActive(gWindDSP,false); FSOUND_DSP_Free(gWindDSP); } 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(); } void LLAudioEngine_FMOD::initWind() { mWindGen = new LLWindGen; if (!gWindDSP) { gWindDSP = FSOUND_DSP_Create(&windCallback, FSOUND_DSP_DEFAULTPRIORITY_CLEARUNIT + 20, mWindGen); } if (gWindDSP) { FSOUND_DSP_SetActive(gWindDSP, true); } mNextWindUpdate = 0.0; } void LLAudioEngine_FMOD::cleanupWind() { if (gWindDSP) { FSOUND_DSP_SetActive(gWindDSP, false); FSOUND_DSP_Free(gWindDSP); gWindDSP = 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, 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. // param = user parameter passed through in FSOUND_DSP_Create. // // modify the buffer in some fashion LLWindGen *windgen = (LLWindGen *)userdata; U8 stride; #if LL_DARWIN stride = sizeof(LLAudioEngine_FMOD::MIXBUFFERFORMAT); #else int mixertype = FSOUND_GetMixer(); if (mixertype == FSOUND_MIXER_BLENDMODE || mixertype == FSOUND_MIXER_QUALITY_FPU) { stride = 4; } else { stride = 2; } #endif newbuffer = windgen->windGenerate((LLAudioEngine_FMOD::MIXBUFFERFORMAT *)newbuffer, length, stride); return newbuffer; }