ComponentResult SooperLooperAU::Render( AudioUnitRenderActionFlags &ioActionFlags,
const AudioTimeStamp & inTimeStamp,
UInt32 nFrames)
{
// save the timestamp
_curr_stamp = inTimeStamp;
if (_last_rendered_frames != nFrames) {
_last_rendered_frames = nFrames;
ConnectionsChanged(); // emit
}
// if we're bypassed we need to passthru the other buses
if (ShouldBypassEffect())
{
for (size_t n=1; n < SL_MAXLOOPS; ++n)
{
try {
AUOutputElement *theOutput = GetOutput(n); // throws if error
AUInputElement *theInput = GetInput(n);
if (theOutput && theInput) {
OSStatus result = theInput->PullInput(ioActionFlags, _curr_stamp, 0 /* element */, nFrames);
if (result == noErr) {
if(ProcessesInPlace() )
{
theOutput->SetBufferList(theInput->GetBufferList() );
}
else {
theOutput->PrepareBuffer(nFrames);
}
// leave silence bit alone
if(!ProcessesInPlace() )
{
theInput->CopyBufferContentsTo (theOutput->GetBufferList());
}
}
}
} catch (...) {
//cerr << "got exception: " << endl;
}
}
}
return AUMIDIEffectBase::Render (ioActionFlags, inTimeStamp, nFrames);
}
ComponentResult AUInlineEffectBase::RenderBus(AudioUnitRenderActionFlags & flags,
const AudioTimeStamp & timestamp, UInt32 bus, UInt32 frames)
{
if ((bus != 0) || (! HasInput(0))) {
return kAudioUnitErr_NoConnection;
}
ComponentResult result;
AUInputElement *theInput = GetInput(0);
result = theInput->PullInput(flags, timestamp, 0, frames);
if (result == noErr) {
AudioBufferList & inputbuffers = theInput->GetBufferList();
if (! IsBypassEffect()) {
result = ProcessBufferLists(flags, inputbuffers, inputbuffers, frames);
}
GetOutput(0)->SetBufferList(inputbuffers);
}
return result;
}
OSStatus Talkbox::Render(AudioUnitRenderActionFlags & ioActionFlags, const AudioTimeStamp & inTimeStamp, UInt32 inFramesToProcess)
{
if (! HasInput(0) )
{
//fprintf(stderr, "no input bus 0 connection\n");
return kAudioUnitErr_NoConnection;
}
OSStatus status = noErr;
AUOutputElement * theOutput = GetOutput(0); // throws if error
AUInputElement * theInput = GetInput(0);
status = theInput->PullInput(ioActionFlags, inTimeStamp, 0 /* element */, inFramesToProcess);
if (status != noErr)
return status;
if (status == noErr)
{
if ( ProcessesInPlace() )
{
theOutput->SetBufferList( theInput->GetBufferList() );
}
AUInputElement * theInput2 = NULL;
try
{
if ( HasInput(1) )
theInput2 = GetInput(1);
}
catch (...) { theInput2 = NULL; }
if (theInput2 != NULL)
{
bool mainInputSilentFlag = (ioActionFlags & kAudioUnitRenderAction_OutputIsSilence) ? true : false;
status = theInput2->PullInput(ioActionFlags, inTimeStamp, 1 /* element */, inFramesToProcess);
//if (result != noErr) fprintf(stderr, "PullInput(bus 1) error %ld\n", result);
if ( !mainInputSilentFlag && (ioActionFlags & kAudioUnitRenderAction_OutputIsSilence) )
ioActionFlags &= ~kAudioUnitRenderAction_OutputIsSilence;
}
else
{
status = kAudioUnitErr_NoConnection;
//fprintf(stderr, "could not access input bus 1 connection\n");
}
if ( ShouldBypassEffect() || (status != noErr) )
{
status = noErr;
// leave silence bit alone
if (! ProcessesInPlace() )
{
theInput->CopyBufferContentsTo( theOutput->GetBufferList() );
}
}
else
{
for (UInt32 i=0; i < numAllocatedChannels; i++)
{
dspKernels[i]->Process(theInput->GetChannelData(i),
theInput2->GetChannelData(i),
theOutput->GetChannelData(i),
inFramesToProcess);
}
}
}
return status;
}
OSStatus SooperLooperAU::ProcessBufferLists(
AudioUnitRenderActionFlags & ioActionFlags,
const AudioBufferList & inBuffer,
AudioBufferList & outBuffer,
UInt32 inFramesToProcess )
{
// deinterleaved
//const AudioBuffer *srcBuffer = inBuffer.mBuffers;
//AudioBuffer *destBuffer = outBuffer.mBuffers;
if (inBuffer.mNumberBuffers == 1) {
if (_chancnt > 1) {
//cerr << "interleaved " << _chancnt << endl;
ioActionFlags |= kAudioUnitRenderAction_OutputIsSilence;
return kAudioUnitErr_InvalidParameter;
}
}
_in_buflist[0] = (AudioBufferList *) &inBuffer;
_out_buflist[0] = &outBuffer;
//cerr << "main bus: " << _out_buflist[0] << " count: " << outBuffer.mNumberBuffers << endl;
// this is called with the main bus (0) buffers
// we really should subclass Render here, but instead
// we'll just get the other busses data too
for (size_t n=1; n < SL_MAXLOOPS; ++n)
{
try {
AUOutputElement *theOutput = GetOutput(n); // throws if error
AUInputElement *theInput = GetInput(n);
if (theOutput && theInput) {
OSStatus result = theInput->PullInput(ioActionFlags, _curr_stamp, 0 /* element */, inFramesToProcess);
if (result == noErr) {
if(ProcessesInPlace() )
{
theOutput->SetBufferList(theInput->GetBufferList() );
}
else {
theOutput->PrepareBuffer(inFramesToProcess);
}
_in_buflist[n] = &theInput->GetBufferList();
}
else {
// no input, just do output
theOutput->PrepareBuffer(inFramesToProcess);
}
if (n > _engine->loop_count()) {
// zero the buffer
AUBufferList::ZeroBuffer(theOutput->GetBufferList());
} else if (_engine->get_loop_channel_count(n-1, true) == 1) {
// for the sidechain outputs that are mono, set the 2nd channel to be == to the first
//theOutput->SetBuffer(1, theOutput->GetBufferList().mBuffers[0]);
}
_out_buflist[n] = &theOutput->GetBufferList();
//cerr << "got bus output: " << n << " " << _out_buflist[n] << " count: " << theOutput->GetBufferList().mNumberBuffers << endl;
}
else {
//cerr << "don't have both in and out for: " << n << endl;
}
} catch (...) {
//cerr << "got exception: with bus " << n << endl;
}
}
// actually do the work
_engine->process (inFramesToProcess);
_in_buflist[0] = 0;
_out_buflist[0] = 0;
for (size_t n=1; n <= _engine->loop_count() && n < SL_MAXLOOPS; ++n) {
if (_engine->get_loop_channel_count(n-1, true) == 1) {
memcpy(_out_buflist[n]->mBuffers[1].mData, _out_buflist[n]->mBuffers[0].mData, sizeof(float) * inFramesToProcess);
}
_in_buflist[n] = 0;
_out_buflist[n] = 0;
}
// force output to be something
ioActionFlags &= ~kAudioUnitRenderAction_OutputIsSilence;
return noErr;
}