bool LV2Effect::ProcessStereo(int count,
WaveTrack *left,
WaveTrack *right,
sampleCount lstart,
sampleCount rstart,
sampleCount len)
{
/* Allocate buffers */
if (mBlockSize == 0)
{
mBlockSize = left->GetMaxBlockSize() * 2;
fInBuffer = new float *[mAudioInputs.GetCount()];
for (size_t i = 0; i < mAudioInputs.GetCount(); i++)
{
fInBuffer[i] = new float[mBlockSize];
}
fOutBuffer = new float *[mAudioOutputs.GetCount()];
for (size_t i = 0; i < mAudioOutputs.GetCount(); i++)
{
fOutBuffer[i] = new float[mBlockSize];
}
}
/* Instantiate the plugin */
LilvInstance *handle = lilv_plugin_instantiate(mData,
left->GetRate(),
gLV2Features);
if (!handle)
{
wxMessageBox(wxString::Format(_("Unable to load plug-in %s"), pluginName.c_str()));
return false;
}
/* Write the Note On to the MIDI event buffer and connect it */
LV2_Event_Buffer *midiBuffer = NULL;
int noteOffTime;
if (mMidiInput)
{
midiBuffer = lv2_event_buffer_new(40, 2);
LV2_Event_Iterator iter;
lv2_event_begin(&iter, midiBuffer);
uint8_t noteOn[] = { 0x90, mNoteKey, mNoteVelocity };
lv2_event_write(&iter, 0, 0, 1, 3, noteOn);
noteOffTime = mNoteLength * left->GetRate();
if (noteOffTime < len && noteOffTime < mBlockSize) {
uint8_t noteOff[] = { 0x80, mNoteKey, 64 };
lv2_event_write(&iter, noteOffTime, 0, 1, 3, noteOff);
}
lilv_instance_connect_port(handle, mMidiInput->mIndex, midiBuffer);
}
for (size_t p = 0; p < mAudioInputs.GetCount(); p++)
{
lilv_instance_connect_port(handle, mAudioInputs[p].mIndex, fInBuffer[p]);
}
for (size_t p = 0; p < mAudioOutputs.GetCount(); p++)
{
lilv_instance_connect_port(handle, mAudioOutputs[p].mIndex, fOutBuffer[p]);
}
for (size_t p = 0; p < mControlInputs.GetCount(); p++)
{
lilv_instance_connect_port(handle, mControlInputs[p].mIndex,
&mControlInputs[p].mControlBuffer);
}
for (size_t p = 0; p < mControlOutputs.GetCount(); p++)
{
lilv_instance_connect_port(handle, mControlOutputs[p].mIndex,
&mControlOutputs[p].mControlBuffer);
}
float latency = 0.0;
if (mLatencyPortIndex >= 0)
{
lilv_instance_connect_port(handle, mLatencyPortIndex, &latency);
}
lilv_instance_activate(handle);
// Actually perform the effect here
sampleCount originalLen = len;
sampleCount ls = lstart;
sampleCount rs = rstart;
sampleCount ols = ls;
sampleCount ors = rs;
bool noteOver = false;
sampleCount delayed = 0;
sampleCount delay = 0;
bool cleared = false;
while (len || delayed)
{
int block = mBlockSize;
if (len)
{
if (block > len)
{
block = len;
}
if (left && mAudioInputs.GetCount() > 0)
{
left->Get((samplePtr)fInBuffer[0], floatSample, ls, block);
}
if (right && mAudioInputs.GetCount() > 1)
{
right->Get((samplePtr)fInBuffer[1], floatSample, rs, block);
}
}
else if (delayed)
{
// At the end if we don't have enough left for a whole block
if (block > delayed)
{
block = delayed;
}
// Clear the input buffer so that we only pass zeros to the effect.
if (!cleared)
{
for (int i = 0; i < mBlockSize; i++)
{
fInBuffer[0][i] = 0.0;
}
if (right)
{
memcpy(fInBuffer[1], fOutBuffer[0], mBlockSize);
}
cleared = true;
}
}
lilv_instance_run(handle, block);
if (delayed == 0 && latency != 0)
{
delayed = delay = latency;
}
if (delay >= block)
{
delay -= block;
}
else if (delay > 0)
{
sampleCount oblock = block - delay;
if (left && mAudioOutputs.GetCount() > 0)
{
left->Set((samplePtr)(fOutBuffer[0] + delay), floatSample, ols, oblock);
}
if (right && mAudioOutputs.GetCount() > 1)
{
right->Set((samplePtr)(fOutBuffer[1] + delay), floatSample, ors, oblock);
}
ols += oblock;
ors += oblock;
delay = 0;
}
else
{
if (left && mAudioOutputs.GetCount() > 0)
{
left->Set((samplePtr)fOutBuffer[0], floatSample, ols, block);
}
if (right && mAudioOutputs.GetCount() > 1)
{
right->Set((samplePtr)fOutBuffer[1], floatSample, ors, block);
}
ols += block;
ors += block;
}
if (len)
{
len -= block;
noteOffTime -= block;
// Clear the event buffer and add the note off event if needed
if (mMidiInput)
{
lv2_event_buffer_reset(midiBuffer, 1,
(uint8_t *)midiBuffer +
sizeof(LV2_Event_Buffer));
if (!noteOver && noteOffTime < len && noteOffTime < block)
{
LV2_Event_Iterator iter;
lv2_event_begin(&iter, midiBuffer);
uint8_t noteOff[] = { 0x80, mNoteKey, 64 };
lv2_event_write(&iter, noteOffTime, 0, 1, 3, noteOff);
noteOver = true;
}
}
}
else if (delayed)
{
delayed -= block;
}
ls += block;
rs += block;
if (mAudioInputs.GetCount() > 1)
{
if (TrackGroupProgress(count, (ls-lstart)/(double)originalLen))
{
return false;
}
}
else
{
if (TrackProgress(count, (ls-lstart)/(double)originalLen))
{
return false;
}
}
}
lilv_instance_deactivate(handle);
lilv_instance_free(handle);
return true;
}
bool LV2Effect::ProcessStereo(int count, WaveTrack *left, WaveTrack *right,
sampleCount lstart,
sampleCount rstart,
sampleCount len)
{
/* Allocate buffers */
if (mBlockSize == 0) {
mBlockSize = left->GetMaxBlockSize() * 2;
fInBuffer = new float *[mAudioInputs.size()];
unsigned long i;
for (i = 0; i < mAudioInputs.size(); i++)
fInBuffer[i] = new float[mBlockSize];
fOutBuffer = new float *[mAudioOutputs.size()];
for (i = 0; i < mAudioOutputs.size(); i++)
fOutBuffer[i] = new float[mBlockSize];
}
/* Instantiate the plugin */
SLV2Instance handle = slv2_plugin_instantiate(mData, left->GetRate(),
gLV2Features);
/* Write the Note On to the MIDI event buffer and connect it */
LV2_Event_Buffer* midiBuffer;
int noteOffTime;
if (mMidiInput) {
midiBuffer = lv2_event_buffer_new(40, 2);
LV2_Event_Iterator iter;
lv2_event_begin(&iter, midiBuffer);
uint8_t noteOn[] = { 0x90, mNoteKey, mNoteVelocity };
lv2_event_write(&iter, 0, 0, 1, 3, noteOn);
noteOffTime = mNoteLength * left->GetRate();
if (noteOffTime < len && noteOffTime < mBlockSize) {
uint8_t noteOff[] = { 0x80, mNoteKey, 64 };
lv2_event_write(&iter, noteOffTime, 0, 1, 3, noteOff);
}
slv2_instance_connect_port(handle, mMidiInput->mIndex, midiBuffer);
}
unsigned long p;
for(p = 0; p < mAudioInputs.size(); p++) {
slv2_instance_connect_port(handle, mAudioInputs[p].mIndex, fInBuffer[p]);
}
for(p = 0; p < mAudioOutputs.size(); p++) {
slv2_instance_connect_port(handle, mAudioOutputs[p].mIndex, fOutBuffer[p]);
}
for (p = 0; p < mControlInputs.size(); p++) {
slv2_instance_connect_port(handle, mControlInputs[p].mIndex,
&mControlInputs[p].mControlBuffer);
}
for (p = 0; p < mControlOutputs.size(); p++) {
slv2_instance_connect_port(handle, mControlOutputs[p].mIndex,
&mControlOutputs[p].mControlBuffer);
}
slv2_instance_activate(handle);
// Actually perform the effect here
sampleCount originalLen = len;
sampleCount ls = lstart;
sampleCount rs = rstart;
bool noteOver = false;
while (len) {
int block = mBlockSize;
if (block > len)
block = len;
if (left && mAudioInputs.size() > 0) {
left->Get((samplePtr)fInBuffer[0], floatSample, ls, block);
}
if (right && mAudioInputs.size() > 1) {
right->Get((samplePtr)fInBuffer[1], floatSample, rs, block);
}
slv2_instance_run(handle, block);
if (left && mAudioOutputs.size() > 0) {
left->Set((samplePtr)fOutBuffer[0], floatSample, ls, block);
}
if (right && mAudioOutputs.size() > 1) {
right->Set((samplePtr)fOutBuffer[1], floatSample, rs, block);
}
len -= block;
noteOffTime -= block;
ls += block;
rs += block;
// Clear the event buffer and add the note off event if needed
if (mMidiInput) {
lv2_event_buffer_reset(midiBuffer, 1,
(uint8_t*)midiBuffer +
sizeof(LV2_Event_Buffer));
if (!noteOver && noteOffTime < len && noteOffTime < block) {
LV2_Event_Iterator iter;
lv2_event_begin(&iter, midiBuffer);
uint8_t noteOff[] = { 0x80, mNoteKey, 64 };
lv2_event_write(&iter, noteOffTime, 0, 1, 3, noteOff);
noteOver = true;
}
}
if (mAudioInputs.size() > 1) {
if (TrackGroupProgress(count, (ls-lstart)/(double)originalLen))
return false;
}
else {
if (TrackProgress(count, (ls-lstart)/(double)originalLen))
return false;
}
}
slv2_instance_deactivate(handle);
slv2_instance_free(handle);
return true;
}
