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avoid repetition with fade on injectors

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This commit is contained in:
Zach Pomerantz 2016-09-29 15:22:21 -07:00
parent 01d2d9243a
commit 43c40aa090
1 changed files with 4 additions and 6 deletions
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10
assignment-client/src/audio/AudioMixer.cpp
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@ -269,19 +269,17 @@ void AudioMixer::addStreamToMixForListeningNodeWithStream(AudioMixerClientData&
bool forceSilentBlock = true;
if (!streamToAdd.getLastPopOutput().isNull()) {
bool isInjector = dynamic_cast<const InjectedAudioStream*>(&streamToAdd);
// reptition with fade is enabled, and we do have a valid previous frame to repeat
// so we mix the previously-mixed block
// this is preferable to not mixing it at all to avoid the harsh jump to silence
// in an injector, just go silent - the injector has likely ended
// in other inputs (microphone, &c.), repeat with fade to avoid the harsh jump to silence
// we'll repeat the last block until it has a block to mix
// and we'll gradually fade that repeated block into silence.
// calculate its fade factor, which depends on how many times it's already been repeated.
repeatedFrameFadeFactor = calculateRepeatedFrameFadeFactor(streamToAdd.getConsecutiveNotMixedCount() - 1);
if (repeatedFrameFadeFactor > 0.0f) {
if (!isInjector && repeatedFrameFadeFactor > 0.0f) {
// apply the repeatedFrameFadeFactor to the gain
gain *= repeatedFrameFadeFactor;