/// <summary>
/// Update this instance.
/// </summary>
void Update()
{
if (!audioSource)
{
return;
}
// If user called Play on the acutal AudioSource, account for this
// NOTE: There may be a potential issue with calling AudioSource.Stop on a
// looping sound, since the Update may not catch this. We might need to catch
// this edge case at some point; a one-shot sound will stop automatically and
// return spatialization resources.
if ((isPlaying == false) && (audioSource.isPlaying))
{
// This is a copy of OSPAudioSource Play function, minus
// calling Play on audio source since it's already been called
// Bail if manager has not even started
if (OSPManager.IsInitialized() == false)
{
return;
}
// We will grab a context at this point, and set the right values
// to allow for spatialization to take effect
Aquire();
// We will set the relative position of this sound now before we start playing
SetRelativeSoundPos(true);
// We are ready to play the sound
// Commented out, kept for readability
// audioSource.Play();
lock (this) isPlaying = true;
}
// If sound is playing on it's own and dies off, we need to
// Reset
if (isPlaying == true)
{
// If we stopped the sound using AudioSource, Release resources
if (audioSource.isPlaying == false)
{
lock (this) isPlaying = false;
Release();
return;
}
// We will go back and forth between spatial processing
// and native 2D panning
if ((Bypass == true) || (OSPManager.GetBypass() == true))
{
#if (!UNITY5)
audioSource.spatialBlend = panLevel;
#else
audioSource.spatialBlend = panLevel;
#endif
audioSource.spread = spread;
}
else
{
// We want to remove FMod curve attenuation if we are doing our
// own internal calc
float pl = sSetPanLevel;
if (OSPManager.GetUseInverseSquareAttenuation() == true)
{
pl = sSetPanLevelInvSq;
}
#if (!UNITY5)
audioSource.spatialBlend = pl;
#else
audioSource.spatialBlend = pl;
#endif
audioSource.spread = sSetSpread;
}
// Update FrequencyHints and local reflection enable/disable
if (context != sNoContext)
{
OSPManager.SetFrequencyHint(context, frequencyHint);
OSPManager.SetDisableReflectionsOnSound(context, disableReflections);
}
// return the context when the sound has finished playing
if ((audioSource.time >= audioSource.clip.length) && (audioSource.loop == false))
{
// One last pass to allow for the tail portion of the sound
// to finish
drainTime = OSPManager.GetDrainTime(context);
drain = true;
}
else
{
// We must set all positional properties here, not in
// OnAudioFilterRead. We might consider a better approach
// to interpolate the current location for better localization,
// should the resolution of setting it here sound jittery due
// to thread frequency mismatch.
SetRelativeSoundPos(false);
#if DEBUG_AudioSource
// Time main thread and audio thread
if (debugOn)
{
// Get audio frequency
if (audioFrames == 0)
{
float ct = 1.0f / (GetTime(false) - dTimeMainLoop);
Debug.LogWarning(System.String.Format("U: {0:F0}", ct));
ct = 100.0f / (GetTime(true) - PrevAudioTime);
Debug.LogWarning(System.String.Format("A: {0:F0}", ct));
audioFrames = 100;
PrevAudioTime = (float)GetTime(true);
}
dTimeMainLoop = (float)GetTime(false);
}
#endif
}
if (drain == true)
{
// Keep playing until we safely drain out the early reflections
drainTime -= Time.deltaTime;
if (drainTime < 0.0f)
{
drain = false;
lock (this) isPlaying = false;
// Stop will both stop audio from playing (keeping OnAudioFilterRead from
// running with a held audio source) as well as release the spatialization
// resources via Release()
Stop();
}
}
}
}