Second Life viewer sources 1.13.2.12

1 files changed, 1176 insertions, 0 deletions

diff --git a/linden/indra/llaudio/audioengine_fmod.cpp b/linden/indra/llaudio/audioengine_fmod.cpp
new file mode 100644
index 0000000..a4ddd1f
--- /dev/null
+++ b/linden/indra/llaudio/audioengine_fmod.cpp
@@ -0,0 +1,1176 @@
+/** 
+ * @file audioengine_fmod.cpp
+ * @brief Implementation of LLAudioEngine class abstracting the audio
+ * support as a FMOD 3D implementation
+ *
+ * Copyright (c) 2002-2007, Linden Research, Inc.
+ * 
+ * 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/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.
+ */
+
+#include "linden_common.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include "audioengine_fmod.h"
+
+#if LL_FMOD
+
+#include "listener_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"
+
+
+void * F_CALLBACKAPI windCallback(void *originalbuffer, void *newbuffer, int length, void* userdata);
+FSOUND_DSPUNIT *gWindDSP = NULL;
+
+// These globals for the wind filter.  Blech!
+F64 gbuf0 = 0.0;
+F64 gbuf1 = 0.0;
+F64 gbuf2 = 0.0;
+F64 gbuf3 = 0.0;
+F64 gbuf4 = 0.0;
+F64 gbuf5 = 0.0;
+F64 gY0 = 0.0;
+F64 gY1 = 0.0;
+
+F32 gTargetGain = 0.f;
+F32 gCurrentGain = 0.f;
+F32 gTargetFreq = 100.f;
+F32 gCurrentFreq = 100.f;
+F32 gTargetPanGainR = 0.5f;
+F32 gCurrentPanGainR = 0.5f;
+
+
+// Safe strcpy
+#if LL_WINDOWS || LL_LINUX
+static size_t strlcpy( char* dest, const char* src, size_t dst_size )
+{
+        size_t source_len = 0;
+        size_t min_len = 0;
+        if( dst_size > 0 )
+        {
+                if( src )
+                {
+                        source_len = strlen(src);       /*Flawfinder: ignore*/
+                        min_len = llmin( dst_size - 1, source_len );
+                        memcpy(dest, src, min_len);     /*Flawfinder: ignore*/  
+                }
+                dest[min_len] = '\0';
+        }
+        return source_len;
+}
+#else
+// apple ships with the non-standard strlcpy in /usr/include/string.h:
+// size_t strlcpy(char *, const char *, size_t);
+#endif
+
+
+LLAudioEngine_FMOD::LLAudioEngine_FMOD()
+{
+        mInited = FALSE;
+        mCurrentInternetStreamp = NULL;
+        mInternetStreamChannel = -1;
+}
+
+
+LLAudioEngine_FMOD::~LLAudioEngine_FMOD()
+{
+}
+
+
+BOOL LLAudioEngine_FMOD::init(const S32 num_channels, void* userdata)
+{
+        mFadeIn = -10000;
+
+        LLAudioEngine::init(num_channels, userdata);
+
+        // Reserve one extra channel for the http stream.
+        if (!FSOUND_SetMinHardwareChannels(num_channels + 1))
+        {
+                llwarns<< "FMOD::init[0](), error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+        }
+
+        llinfos << "LLAudioEngine_FMOD::init() initializing FMOD" << llendl;
+
+        F32 version = FSOUND_GetVersion();
+        if (version < FMOD_VERSION)
+        {
+                llwarns << "Error : You are using the wrong FMOD version (" << version
+                        << ")!  You should be using FMOD " << FMOD_VERSION << llendl;
+                //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))
+        {
+                llwarns << "Error setting FMOD window: "
+                        << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+                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*/
+        {
+                llinfos << "Pacifying valgrind in FMOD init." << llendl;
+                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_ESD")) /*Flawfinder: ignore*/
+                {
+                        llinfos << "Trying ESD audio output..." << llendl;
+                        if(FSOUND_SetOutput(FSOUND_OUTPUT_ESD) &&
+                           FSOUND_Init(44100, num_channels, fmod_flags))
+                        {
+                                llinfos << "ESD audio output initialized OKAY"
+                                        << llendl;
+                                audio_ok = TRUE;
+                        } else {
+                                llwarns << "ESD audio output FAILED to initialize: "
+                                        << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+                        }
+                } else {
+                        llinfos << "ESD audio output SKIPPED" << llendl;
+                }
+
+        if (!audio_ok)
+                if (NULL == getenv("LL_BAD_OSS"))        /*Flawfinder: ignore*/
+                {
+                        llinfos << "Trying OSS audio output..." << llendl;
+                        if(FSOUND_SetOutput(FSOUND_OUTPUT_OSS) &&
+                           FSOUND_Init(44100, num_channels, fmod_flags))
+                        {
+                                llinfos << "OSS audio output initialized OKAY" << llendl;
+                                audio_ok = TRUE;
+                        } else {
+                                llwarns << "OSS audio output FAILED to initialize: "
+                                        << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+                        }
+                } else {
+                        llinfos << "OSS audio output SKIPPED" << llendl;
+                }
+
+        if (!audio_ok)
+                if (NULL == getenv("LL_BAD_ALSA"))              /*Flawfinder: ignore*/
+                {
+                        llinfos << "Trying ALSA audio output..." << llendl;
+                        if(FSOUND_SetOutput(FSOUND_OUTPUT_ALSA) &&
+                           FSOUND_Init(44100, num_channels, fmod_flags))
+                        {
+                                llinfos << "ALSA audio output initialized OKAY" << llendl;
+                                audio_ok = TRUE;
+                        } else {
+                                llwarns << "ALSA audio output FAILED to initialize: "
+                                        << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+                        }
+                } else {
+                        llinfos << "OSS audio output SKIPPED" << llendl;
+                }
+
+        if (!audio_ok)
+        {
+                llwarns << "Overall audio init failure." << llendl;
+                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: llinfos << "Audio output: NoSound" << llendl; break;
+        case FSOUND_OUTPUT_OSS: llinfos << "Audio output: OSS" << llendl; break;
+        case FSOUND_OUTPUT_ESD: llinfos << "Audio output: ESD" << llendl; break;
+        case FSOUND_OUTPUT_ALSA: llinfos << "Audio output: ALSA" << llendl; break;
+        default: llinfos << "Audio output: Unknown!" << llendl; break;
+        };
+
+#else // LL_LINUX
+
+        // initialize the FMOD engine
+        if (!FSOUND_Init(44100, num_channels, fmod_flags))
+        {
+                llwarns << "Error initializing FMOD: "
+                        << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+                return FALSE;
+        }
+        
+#endif
+
+        initInternetStream();
+
+        llinfos << "LLAudioEngine_FMOD::init() FMOD initialized correctly" << llendl;
+
+        mInited = TRUE;
+
+        return TRUE;
+}
+
+
+void LLAudioEngine_FMOD::idle(F32 max_decode_time)
+{
+        LLAudioEngine::idle(max_decode_time);
+
+        updateInternetStream();
+}
+
+
+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()
+{
+        if (!gWindDSP)
+        {
+                gWindDSP = FSOUND_DSP_Create(&windCallback, FSOUND_DSP_DEFAULTPRIORITY_CLEARUNIT + 20, NULL);
+        }
+        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;
+        }
+}
+
+
+//-----------------------------------------------------------------------
+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));
+                
+                gTargetFreq = (F32)center_freq;
+                gTargetGain = (F32)mapWindVecToGain(wind_vec) * mMaxWindGain;
+                gTargetPanGainR = (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 ) );
+
+        if ( mInternetStreamChannel != -1 )
+        {
+                F32 clamp_internet_stream_gain = llclamp( mInternetStreamGain, 0.0f, 1.0f );
+                FSOUND_SetVolumeAbsolute( mInternetStreamChannel, llround( 255.0f * clamp_internet_stream_gain ) );
+        }
+}
+
+//
+// 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)
+        {
+                if (!FSOUND_SetVolume(mChannelID, llround(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 << llendl;
+                        llwarns << "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))
+                {
+                        llwarns << "LLAudioChannelFMOD::update3DPosition error: " << FMOD_ErrorString(FSOUND_GetError()) << llendl;
+                }
+        }
+}
+
+
+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 sign of the last sample
+        // flips.  This is pretty crappy.
+        //
+        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))
+        {
+                llwarns << "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 char *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 == NULL)
+        {
+                // invalid filename, abort.
+                return FALSE;
+        }
+
+        S32 file_size = 0;
+        apr_file_t* apr_file = ll_apr_file_open(filename, LL_APR_RPB, &file_size);
+        if (!apr_file)
+        {
+                // File not found, abort.
+                return FALSE;
+        }
+        apr_file_close(apr_file);
+
+        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.
+        FILE*   sound_file = LLFile::fopen(filename,"rb");
+        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, 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;
+                }
+        }
+}
+
+
+
+//---------------------------------------------------------------------------
+// Internet Streaming
+//---------------------------------------------------------------------------
+void LLAudioEngine_FMOD::initInternetStream()
+{
+        // 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);
+        mInternetStreamURL[0] = 0;
+}
+
+
+void LLAudioEngine_FMOD::startInternetStream(const char* url)
+{
+        if (!mInited)
+        {
+                llwarns << "startInternetStream before audio initialized" << llendl;
+                return;
+        }
+
+        // "stop" stream but don't clear url, etc. in calse url == mInternetStreamURL
+        stopInternetStream();
+        if (url)
+        {
+                llinfos << "Starting internet stream: " << url << llendl;
+                mCurrentInternetStreamp = new LLAudioStreamFMOD(url);
+                strlcpy(mInternetStreamURL, url, 1024);
+        }
+        else
+        {
+                llinfos << "Set internet stream to null" << llendl;
+                mInternetStreamURL[0] = 0;
+        }
+}
+
+
+signed char F_CALLBACKAPI LLAudioEngine_FMOD::callbackMetaData(char *name, char *value, void *userdata)
+{
+        /*
+        LLAudioEngine_FMOD* self = (LLAudioEngine_FMOD*)userdata;
+
+    if (!strcmp("ARTIST", name))
+    {
+        strlcpy(self->mInternetStreamArtist, value, 256);
+        self->mInternetStreamNewMetaData = TRUE;
+        return TRUE;
+    }
+
+    if (!strcmp("TITLE", name))
+    {
+        strlcpy(self->mInternetStreamTitle, value, 256);
+        self->mInternetStreamNewMetaData = TRUE;
+        return TRUE;
+    }
+        */
+
+    return TRUE;
+}
+
+
+void LLAudioEngine_FMOD::updateInternetStream()
+{
+        // Kill dead internet streams, if possible
+        std::list<LLAudioStreamFMOD *>::iterator iter;
+        for (iter = mDeadStreams.begin(); iter != mDeadStreams.end();)
+        {
+                LLAudioStreamFMOD *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 (mInternetStreamChannel < 0)
+                {
+                        mInternetStreamChannel = mCurrentInternetStreamp->startStream();
+
+                        if (mInternetStreamChannel != -1)
+                        {
+                                // Reset volume to previously set volume
+                                setInternetStreamGain(mInternetStreamGain);
+                                FSOUND_SetPaused(mInternetStreamChannel, FALSE);
+                                //FSOUND_Stream_Net_SetMetadataCallback(mInternetStream, callbackMetaData, this);
+                        }
+                }
+        }
+                
+        switch(open_state)
+        {
+        default:
+        case 0:
+                // success
+                break;
+        case -1:
+                // stream handle is invalid
+                llwarns << "InternetStream - invalid handle" << llendl;
+                stopInternetStream();
+                return;
+        case -2:
+                // opening
+                //strlcpy(mInternetStreamArtist, "Opening", 256);
+                break;
+        case -3:
+                // failed to open, file not found, perhaps
+                llwarns << "InternetSteam - failed to open" << llendl;
+                stopInternetStream();
+                return;
+        case -4:
+                // connecting
+                //strlcpy(mInternetStreamArtist, "Connecting", 256);
+                break;
+        case -5:
+                // buffering
+                //strlcpy(mInternetStreamArtist, "Buffering", 256);
+                break;
+        }
+
+}
+
+void LLAudioEngine_FMOD::stopInternetStream()
+{
+        if (mInternetStreamChannel != -1)
+        {
+                FSOUND_SetPaused(mInternetStreamChannel, TRUE);
+                FSOUND_SetPriority(mInternetStreamChannel, 0);
+                mInternetStreamChannel = -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;
+                //mInternetStreamURL[0] = 0;
+        }
+}
+
+void LLAudioEngine_FMOD::pauseInternetStream(int pause)
+{
+        if (pause < 0)
+        {
+                pause = mCurrentInternetStreamp ? 1 : 0;
+        }
+
+        if (pause)
+        {
+                if (mCurrentInternetStreamp)
+                {
+                        stopInternetStream();
+                }
+        }
+        else if (mInternetStreamURL)
+        {
+                startInternetStream(mInternetStreamURL);
+        }
+}
+
+
+// A stream is "playing" if it has been requested to start.  That
+// doesn't necessarily mean audio is coming out of the speakers.
+int LLAudioEngine_FMOD::isInternetStreamPlaying()
+{
+        if (mCurrentInternetStreamp)
+        {
+                return 1; // Active and playing
+        }
+        else if (mInternetStreamURL[0])
+        {
+                return 2; // "Paused"
+        }
+        else
+        {
+                return 0;
+        }
+}
+
+
+void LLAudioEngine_FMOD::getInternetStreamInfo(char* artist_out, char* title_out)
+{
+        //strlcpy(artist_out, mInternetStreamArtist, 256);
+        //strlcpy(title_out, mInternetStreamTitle, 256);
+}
+
+
+void LLAudioEngine_FMOD::setInternetStreamGain(F32 vol)
+{
+        LLAudioEngine::setInternetStreamGain(vol);
+        if (mInternetStreamChannel != -1)
+        {
+                vol = llclamp(vol, 0.f, 1.f);
+                int vol_int = llround(vol * 255.f);
+                FSOUND_SetVolumeAbsolute(mInternetStreamChannel, vol_int);
+        }
+}
+
+
+const char* LLAudioEngine_FMOD::getInternetStreamURL()
+{
+        return mInternetStreamURL;
+}
+
+
+LLAudioStreamFMOD::LLAudioStreamFMOD(const char *url) :
+        mInternetStream(NULL),
+        mReady(FALSE)
+{
+        mInternetStreamURL[0] = 0;
+        strlcpy(mInternetStreamURL, url, 1024);
+        mInternetStream = FSOUND_Stream_Open(url, 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 LLAudioStreamFMOD::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 LLAudioStreamFMOD::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 LLAudioStreamFMOD::getOpenState()
+{
+        int open_state = FSOUND_Stream_GetOpenState(mInternetStream);
+        return open_state;
+}
+
+/* This determines the format of the mixbuffer being passed in. change if you want to support int32 or float32 */
+#if LL_DARWIN
+        #define MIXBUFFERFORMAT S32
+#else
+        #define MIXBUFFERFORMAT S16
+#endif
+
+inline MIXBUFFERFORMAT clipSample(MIXBUFFERFORMAT sample, MIXBUFFERFORMAT min, MIXBUFFERFORMAT max)
+{
+        if (sample > max)
+                sample = max;
+        else if (sample < min)
+                sample = min;
+        
+        return sample;
+}
+
+void * F_CALLBACKAPI windCallback(void *originalbuffer, void *newbuffer, int length, void*)
+{
+// originalbuffer = fsounds 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
+
+        U8 *cursamplep = (U8*)newbuffer;
+        U8   wordsize = 2;
+
+#if LL_DARWIN
+        wordsize = sizeof(MIXBUFFERFORMAT);
+#else
+    int         mixertype = FSOUND_GetMixer();
+    if (mixertype == FSOUND_MIXER_BLENDMODE || mixertype == FSOUND_MIXER_QUALITY_FPU)
+    {
+                wordsize = 4;
+    }
+#endif
+
+    double bandwidth = 50;
+    double inputSamplingRate = 44100;
+        double a0,b1,b2;
+ 
+        // calculate resonant filter coeffs
+    b2 = exp(-(F_TWO_PI) * (bandwidth / inputSamplingRate));
+
+        while (length--)
+        {
+                gCurrentFreq = (float)((0.999 * gCurrentFreq) + (0.001 * gTargetFreq));
+                gCurrentGain = (float)((0.999 * gCurrentGain) + (0.001 * gTargetGain));
+                gCurrentPanGainR = (float)((0.999 * gCurrentPanGainR) + (0.001 * gTargetPanGainR));
+                b1 = (-4.0 * b2) / (1.0 + b2) * cos(F_TWO_PI * (gCurrentFreq / inputSamplingRate));
+            a0 = (1.0 - b2) * sqrt(1.0 - (b1 * b1) / (4.0 * b2));
+                double nextSample;
+
+            // start with white noise
+                nextSample = frand(2.0f) - 1.0f;
+                                                                         
+#if 1 // LLAE_WIND_PINK apply pinking filter
+                gbuf0 = 0.997f * gbuf0 + 0.0126502f * nextSample; 
+        gbuf1 = 0.985f * gbuf1 + 0.0139083f * nextSample;
+        gbuf2 = 0.950f * gbuf2 + 0.0205439f * nextSample;
+        gbuf3 = 0.850f * gbuf3 + 0.0387225f * nextSample;
+        gbuf4 = 0.620f * gbuf4 + 0.0465932f * nextSample;
+        gbuf5 = 0.250f * gbuf5 + 0.1093477f * nextSample;
+                          
+        nextSample = gbuf0 + gbuf1 + gbuf2 + gbuf3 + gbuf4 + gbuf5;
+#endif
+                        
+#if 1 //LLAE_WIND_RESONANT // do a resonant filter on the noise
+        nextSample = (double)( a0 * nextSample - b1 * gY0 - b2 * gY1 );
+
+        gY1 = gY0;
+        gY0 = nextSample;
+#endif
+
+            nextSample *= gCurrentGain;
+                
+                MIXBUFFERFORMAT sample;
+
+                sample = llfloor(((F32)nextSample*32768.f*(1.0f - gCurrentPanGainR))+0.5f);
+                *(MIXBUFFERFORMAT*)cursamplep = clipSample((*(MIXBUFFERFORMAT*)cursamplep) + sample, -32768, 32767);
+                cursamplep += wordsize;
+
+                sample = llfloor(((F32)nextSample*32768.f*gCurrentPanGainR)+0.5f);
+                *(MIXBUFFERFORMAT*)cursamplep = clipSample((*(MIXBUFFERFORMAT*)cursamplep) + sample, -32768, 32767);
+                cursamplep += wordsize;
+        }
+
+        return newbuffer;
+}
+
+#endif  // LL_FMOD
+