allanger/paulxstretch
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Attempt implementing offline rendering from the plugin but not going so great. Looks like the StretchAudioSource doesn't really work that robustly...

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This commit is contained in:
xenakios
2018-02-26 17:49:19 +02:00
parent 47638ba0c6
commit 909b61922b
4 changed files with 67 additions and 9 deletions
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61
Source/PluginProcessor.cpp
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@@ -411,9 +411,60 @@ void PaulstretchpluginAudioProcessor::updateStretchParametersFromPluginParameter
pars.tonal_vs_noise.preserve = *getFloatParameter(cpi_tonalvsnoisepreserve);
}
String PaulstretchpluginAudioProcessor::offlineRender(File outputfile)
{
File outputfiletouse = outputfile.getNonexistentSibling();
int numoutchans = *getIntParameter(cpi_num_outchans);
auto ss = std::make_shared<StretchAudioSource>(numoutchans,m_afm);
int blocksize = 2048;
int64_t outlen = 10 * getSampleRateChecked();
int64_t outcounter = 0;
ss->setFFTSize(m_fft_size_to_use);
ss->setAudioFile(m_current_file);
ProcessParameters renderpars;
updateStretchParametersFromPluginParameters(renderpars);
ss->setProcessParameters(&renderpars);
double t0 = *getFloatParameter(cpi_soundstart);
double t1 = *getFloatParameter(cpi_soundend);
sanitizeTimeRange(t0, t1);
ss->setRate(*getFloatParameter(cpi_stretchamount));
ss->setPlayRange({ t0,t1 }, true);
ss->setLoopingEnabled(true);
ss->setNumOutChannels(numoutchans);
ss->setFFTWindowingType(1);
ss->setPreviewDry(true);
ss->setOnsetDetection(*getFloatParameter(cpi_onsetdetection));
ss->setLoopXFadeLength(*getFloatParameter(cpi_loopxfadelen));
ss->setFreezing(getParameter(cpi_freeze));
ss->setPaused(getParameter(cpi_pause_enabled));
ss->prepareToPlay(blocksize, getSampleRateChecked());
AudioBuffer<float> renderbuffer(numoutchans, blocksize);
WavAudioFormat wavformat;
FileOutputStream* outstream = outputfiletouse.createOutputStream();
if (outstream == nullptr)
return "Could not create output file";
auto writer = wavformat.createWriterFor(outstream, getSampleRateChecked(), numoutchans, 32, StringPairArray(), 0);
if (writer == nullptr)
{
delete outstream;
return "Could not create WAV writer";
}
AudioSourceChannelInfo asci(renderbuffer);
while (outcounter < outlen)
{
ss->setMainVolume(*getFloatParameter(cpi_main_volume));
ss->getNextAudioBlock(asci);
writer->writeFromAudioSampleBuffer(renderbuffer,0,blocksize);
outcounter += blocksize;
}
delete writer;
return "Rendered OK";
}
double PaulstretchpluginAudioProcessor::getSampleRateChecked()
{
if (m_cur_sr < 1.0)
if (m_cur_sr < 1.0 || m_cur_sr>1000000.0)
return 44100.0;
return m_cur_sr;
}
@@ -503,14 +554,6 @@ void copyAudioBufferWrappingPosition(const AudioBuffer<float>& src, AudioBuffer<
}
}
inline void sanitizeTimeRange(double& t0, double& t1)
{
if (t0 > t1)
std::swap(t0, t1);
if (t1 - t0 < 0.001)
t1 = t0 + 0.001;
}
void PaulstretchpluginAudioProcessor::processBlock (AudioSampleBuffer& buffer, MidiBuffer& midiMessages)
{
ScopedLock locker(m_cs);