diff options
Diffstat (limited to 'indra/newview/llvieweraudio.cpp')
| -rw-r--r-- | indra/newview/llvieweraudio.cpp | 238 |
1 files changed, 234 insertions, 4 deletions
diff --git a/indra/newview/llvieweraudio.cpp b/indra/newview/llvieweraudio.cpp index f7fa5690d6..2447f5dea8 100644 --- a/indra/newview/llvieweraudio.cpp +++ b/indra/newview/llvieweraudio.cpp @@ -37,9 +37,226 @@ #include "llvoiceclient.h" #include "llviewermedia.h" #include "llprogressview.h" +#include "llcallbacklist.h" +#include "llstartup.h" +#include "llviewerparcelmgr.h" +#include "llparcel.h" ///////////////////////////////////////////////////////// +LLViewerAudio::LLViewerAudio() : + mDone(true), + mFadeState(FADE_IDLE), + mFadeTime(), + mIdleListnerActive(false), + mForcedTeleportFade(false) +{ + mTeleportFailedConnection = LLViewerParcelMgr::getInstance()-> + setTeleportFailedCallback(boost::bind(&LLViewerAudio::onTeleportFailed, this)); +} + +LLViewerAudio::~LLViewerAudio() +{ + mTeleportFailedConnection.disconnect(); +} + +void LLViewerAudio::registerIdleListener() +{ + if(mIdleListnerActive==false) + { + mIdleListnerActive = true; + doOnIdleRepeating(boost::bind(boost::bind(&LLViewerAudio::onIdleUpdate, this))); + } + +} + +void LLViewerAudio::startInternetStreamWithAutoFade(std::string streamURI) +{ + // Old and new stream are identical + if (mNextStreamURI == streamURI) + { + return; + } + + // Record the URI we are going to be switching to + mNextStreamURI = streamURI; + + switch (mFadeState) + { + case FADE_IDLE: + // If a stream is playing fade it out first + if (!gAudiop->getInternetStreamURL().empty()) + { + // The order of these tests is important, state FADE_OUT will be processed below + mFadeState = FADE_OUT; + } + // Otherwise the new stream can be faded in + else + { + mFadeState = FADE_IN; + gAudiop->startInternetStream(mNextStreamURI); + startFading(); + registerIdleListener(); + break; + } + + case FADE_OUT: + startFading(); + registerIdleListener(); + break; + + case FADE_IN: + registerIdleListener(); + break; + + default: + llwarns << "Unknown fading state: " << mFadeState << llendl; + break; + } +} + +// A return of false from onIdleUpdate means it will be called again next idle update. +// A return of true means we have finished with it and the callback will be deleted. +bool LLViewerAudio::onIdleUpdate() +{ + bool fadeIsFinished = false; + + // There is a delay in the login sequence between when the parcel information has + // arrived and the music stream is started and when the audio system is called to set + // initial volume levels. This code extends the fade time so you hear a full fade in. + if ((LLStartUp::getStartupState() < STATE_STARTED)) + { + stream_fade_timer.reset(); + stream_fade_timer.setTimerExpirySec(mFadeTime); + } + + if (mDone) + { + // This should be a rare or never occurring state. + if (mFadeState == FADE_IDLE) + { + deregisterIdleListener(); + fadeIsFinished = true; // Stop calling onIdleUpdate + } + + // we have finished the current fade operation + if (mFadeState == FADE_OUT) + { + // Clear URI + gAudiop->startInternetStream(LLStringUtil::null); + gAudiop->stopInternetStream(); + + if (!mNextStreamURI.empty()) + { + mFadeState = FADE_IN; + gAudiop->startInternetStream(mNextStreamURI); + startFading(); + } + else + { + mFadeState = FADE_IDLE; + deregisterIdleListener(); + fadeIsFinished = true; // Stop calling onIdleUpdate + } + } + else if (mFadeState == FADE_IN) + { + if (mNextStreamURI != gAudiop->getInternetStreamURL()) + { + mFadeState = FADE_OUT; + startFading(); + } + else + { + mFadeState = FADE_IDLE; + deregisterIdleListener(); + fadeIsFinished = true; // Stop calling onIdleUpdate + } + } + } + + return fadeIsFinished; +} + +void LLViewerAudio::stopInternetStreamWithAutoFade() +{ + mFadeState = FADE_IDLE; + mNextStreamURI = LLStringUtil::null; + mDone = true; + + gAudiop->startInternetStream(LLStringUtil::null); + gAudiop->stopInternetStream(); +} + +void LLViewerAudio::startFading() +{ + const F32 AUDIO_MUSIC_FADE_IN_TIME = 3.0f; + const F32 AUDIO_MUSIC_FADE_OUT_TIME = 2.0f; + // This minimum fade time prevents divide by zero and negative times + const F32 AUDIO_MUSIC_MINIMUM_FADE_TIME = 0.01f; + + if(mDone) + { + // The fade state here should only be one of FADE_IN or FADE_OUT, but, in case it is not, + // rather than check for both states assume a fade in and check for the fade out case. + mFadeTime = AUDIO_MUSIC_FADE_IN_TIME; + if (LLViewerAudio::getInstance()->getFadeState() == LLViewerAudio::FADE_OUT) + { + mFadeTime = AUDIO_MUSIC_FADE_OUT_TIME; + } + + // Prevent invalid fade time + mFadeTime = llmax(mFadeTime, AUDIO_MUSIC_MINIMUM_FADE_TIME); + + stream_fade_timer.reset(); + stream_fade_timer.setTimerExpirySec(mFadeTime); + mDone = false; + } +} + +F32 LLViewerAudio::getFadeVolume() +{ + F32 fade_volume = 1.0f; + + if (stream_fade_timer.hasExpired()) + { + mDone = true; + // If we have been fading out set volume to 0 until the next fade state occurs to prevent + // an audio transient. + if (LLViewerAudio::getInstance()->getFadeState() == LLViewerAudio::FADE_OUT) + { + fade_volume = 0.0f; + } + } + + if (!mDone) + { + // Calculate how far we are into the fade time + fade_volume = stream_fade_timer.getElapsedTimeF32() / mFadeTime; + + if (LLViewerAudio::getInstance()->getFadeState() == LLViewerAudio::FADE_OUT) + { + // If we are not fading in then we are fading out, so invert the fade + // direction; start loud and move towards zero volume. + fade_volume = 1.0f - fade_volume; + } + } + + return fade_volume; +} + +void LLViewerAudio::onTeleportFailed() +{ + if (gAudiop) + { + LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel(); + if (parcel) + { + mNextStreamURI = parcel->getMusicURL(); + } + } +} + void init_audio() { if (!gAudiop) @@ -142,12 +359,25 @@ void audio_update_volume(bool force_update) // Streaming Music if (gAudiop) - { + { + if (progress_view_visible && !LLViewerAudio::getInstance()->getForcedTeleportFade()) + { + LLViewerAudio::getInstance()->setForcedTeleportFade(true); + LLViewerAudio::getInstance()->startInternetStreamWithAutoFade(LLStringUtil::null); + LLViewerAudio::getInstance()->setNextStreamURI(LLStringUtil::null); + } + + if (!progress_view_visible && LLViewerAudio::getInstance()->getForcedTeleportFade() == true) + { + LLViewerAudio::getInstance()->setForcedTeleportFade(false); + } + F32 music_volume = gSavedSettings.getF32("AudioLevelMusic"); BOOL music_muted = gSavedSettings.getBOOL("MuteMusic"); - music_volume = mute_volume * master_volume * music_volume; - gAudiop->setInternetStreamGain ( music_muted || progress_view_visible ? 0.f : music_volume ); - + F32 fade_volume = LLViewerAudio::getInstance()->getFadeVolume(); + + music_volume = mute_volume * master_volume * music_volume * fade_volume; + gAudiop->setInternetStreamGain (music_muted ? 0.f : music_volume); } // Streaming Media |