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LadspaEffect: use stack for downsampling

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Not likely to be an issue currently, but if(when) we at some point allow >44.1k samplerates for playback, we may run in a situation where we have to downsample audio for processing, and thus we'd be doing heap allocation every period - it's best to fix this in advance so we're using stack for it for now (may be replaced with memory management later though)
This commit is contained in:
Vesa
2014-08-21 18:50:20 +03:00
parent 8ac71f7000
commit ba1c15f0fa
1 changed files with 2 additions and 2 deletions
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4
plugins/LadspaEffect/LadspaEffect.cpp
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@@ -143,11 +143,12 @@ bool LadspaEffect::processAudioBuffer( sampleFrame * _buf,
int frames = _frames;
sampleFrame * o_buf = NULL;
sampleFrame sBuf [_frames];
if( m_maxSampleRate < engine::mixer()->processingSampleRate() )
{
o_buf = _buf;
_buf = new sampleFrame[_frames];
_buf = &sBuf[0];
sampleDown( o_buf, _buf, m_maxSampleRate );
frames = _frames * m_maxSampleRate /
engine::mixer()->processingSampleRate();
@@ -250,7 +251,6 @@ bool LadspaEffect::processAudioBuffer( sampleFrame * _buf,
if( o_buf != NULL )
{
sampleBack( _buf, o_buf, m_maxSampleRate );
delete[] _buf;
}
checkGate( out_sum / frames );