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fetch pointer to LADSPA port descriptor once outside the inner loops - improves performance of ladspaEffect::processAudioBuffer() by 400%

Browse Source 
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1727 0778d3d1-df1d-0410-868b-ea421aaaa00d
This commit is contained in:
Tobias Doerffel
2008-10-02 21:47:18 +00:00
parent baf52ca21c
commit 0bb64d39ad
2 changed files with 29 additions and 18 deletions
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40
plugins/ladspa_effect/ladspa_effect.cpp
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@@ -150,44 +150,45 @@ bool ladspaEffect::processAudioBuffer( sampleFrame * _buf,
{
for( int port = 0; port < m_portCount; ++port )
{
switch( m_ports[proc][port]->rate )
port_desc_t * pp = m_ports.at( proc ).at( port );
switch( pp->rate )
{
case CHANNEL_IN:
for( fpp_t frame = 0;
frame < frames; ++frame )
{
m_ports[proc][port]->buffer[frame] =
pp->buffer[frame] =
_buf[frame][channel];
}
++channel;
break;
case AUDIO_RATE_INPUT:
m_ports[proc][port]->value =
pp->value =
static_cast<LADSPA_Data>(
m_ports[proc][port]->control->getValue() /
m_ports[proc][port]->scale );
pp->control->getValue() /
pp->scale );
// This only supports control rate ports, so the audio rates are
// treated as though they were control rate by setting the
// port buffer to all the same value.
for( fpp_t frame = 0;
frame < frames; ++frame )
{
m_ports[proc][port]->buffer[frame] =
m_ports[proc][port]->value;
pp->buffer[frame] =
pp->value;
}
break;
case CONTROL_RATE_INPUT:
if( m_ports[proc][port]->control ==
if( pp->control ==
NULL )
{
break;
}
m_ports[proc][port]->value =
pp->value =
static_cast<LADSPA_Data>(
m_ports[proc][port]->control->getValue() /
m_ports[proc][port]->scale );
m_ports[proc][port]->buffer[0] =
m_ports[proc][port]->value;
pp->control->getValue() /
pp->scale );
pp->buffer[0] =
pp->value;
break;
case CHANNEL_OUT:
case AUDIO_RATE_OUTPUT:
@@ -214,7 +215,8 @@ bool ladspaEffect::processAudioBuffer( sampleFrame * _buf,
{
for( int port = 0; port < m_portCount; ++port )
{
switch( m_ports[proc][port]->rate )
port_desc_t * pp = m_ports.at( proc ).at( port );
switch( pp->rate )
{
case CHANNEL_IN:
case AUDIO_RATE_INPUT:
@@ -228,7 +230,7 @@ bool ladspaEffect::processAudioBuffer( sampleFrame * _buf,
d *
_buf[frame][channel] +
w *
m_ports[proc][port]->buffer[frame];
pp->buffer[frame];
out_sum +=
_buf[frame][channel] *
_buf[frame][channel];
@@ -474,10 +476,11 @@ void ladspaEffect::pluginInstantiation( void )
{
for( int port = 0; port < m_portCount; port++ )
{
port_desc_t * pp = m_ports.at( proc ).at( port );
if( !manager->connectPort( m_key,
m_handles[proc],
port,
m_ports[proc][port]->buffer ) )
pp->buffer ) )
{
QMessageBox::warning( 0, "Effect",
"Failed to connect port: " + m_key.second,
@@ -515,8 +518,9 @@ void ladspaEffect::pluginDestruction( void )
manager->cleanup( m_key, m_handles[proc] );
for( int port = 0; port < m_portCount; port++ )
{
delete[] m_ports[proc][port]->buffer;
delete m_ports[proc][port];
port_desc_t * pp = m_ports.at( proc ).at( port );
delete[] pp->buffer;
delete pp;
}
m_ports[proc].clear();
}