Method processAudioBuffer

plugins/VstEffect/VstEffect.cpp:82–122

bool VstEffect::processAudioBuffer( sampleFrame * _buf, const fpp_t _frames )
{
	if( !isEnabled() || !isRunning () )
	{
		return false;
	}

	if( m_plugin )
	{
		const float d = dryLevel();
#ifdef __GNUC__
		sampleFrame buf[_frames];
#else
		sampleFrame * buf = new sampleFrame[_frames];
#endif
		memcpy( buf, _buf, sizeof( sampleFrame ) * _frames );
		if (m_pluginMutex.tryLock(Engine::getSong()->isExporting() ? -1 : 0))
		{
			m_plugin->process( buf, buf );
			m_pluginMutex.unlock();
		}

		double out_sum = 0.0;
		const float w = wetLevel();
		for( fpp_t f = 0; f < _frames; ++f )
		{
			_buf[f][0] = w*buf[f][0] + d*_buf[f][0];
			_buf[f][1] = w*buf[f][1] + d*_buf[f][1];
		}
		for( fpp_t f = 0; f < _frames; ++f )
		{
			out_sum += _buf[f][0]*_buf[f][0] + _buf[f][1]*_buf[f][1];
		}
#ifndef __GNUC__
		delete[] buf;
#endif

		checkGate( out_sum / _frames );
	}
	return isRunning();
}