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FxMixer - Further optimization: skip copying buffers if we know the sender has no meaningful input to copy

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Vesa
2014-04-26 07:30:23 +03:00
parent 7d5250b93a
commit 0f37bd13ee
1 changed files with 13 additions and 10 deletions
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23
src/core/FxMixer.cpp
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@@ -101,17 +101,20 @@ void FxChannel::doProcessing( sampleFrame * _buf )
sender->process();
}
// get the send level...
const float amt =
fxm->channelSendModel( senderIndex, m_channelIndex )->value();
// mix it's output with this one's output
sampleFrame * ch_buf = sender->m_buffer;
const float v = sender->m_volumeModel.value() * amt;
for( f_cnt_t f = 0; f < fpp; ++f )
if( sender->m_hasInput || sender->m_stillRunning )
{
_buf[f][0] += ch_buf[f][0] * v;
_buf[f][1] += ch_buf[f][1] * v;
// get the send level...
const float amt =
fxm->channelSendModel( senderIndex, m_channelIndex )->value();
// mix it's output with this one's output
sampleFrame * ch_buf = sender->m_buffer;
const float v = sender->m_volumeModel.value() * amt;
for( f_cnt_t f = 0; f < fpp; ++f )
{
_buf[f][0] += ch_buf[f][0] * v;
_buf[f][1] += ch_buf[f][1] * v;
}
}
// if sender channel hasInput, then we hasInput too