Chris@0: 
Chris@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     Sonic Visualiser
Chris@0:     An audio file viewer and annotation editor.
Chris@0:     Centre for Digital Music, Queen Mary, University of London.
Chris@0:     This file copyright 2006 Chris Cannam.
Chris@0:     
Chris@0:     This program is free software; you can redistribute it and/or
Chris@0:     modify it under the terms of the GNU General Public License as
Chris@0:     published by the Free Software Foundation; either version 2 of the
Chris@0:     License, or (at your option) any later version.  See the file
Chris@0:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "RealTimePluginTransform.h"
Chris@0: 
Chris@0: #include "plugin/RealTimePluginFactory.h"
Chris@0: #include "plugin/RealTimePluginInstance.h"
Chris@0: #include "plugin/PluginXml.h"
Chris@0: 
Chris@1: #include "data/model/Model.h"
Chris@1: #include "data/model/SparseTimeValueModel.h"
Chris@1: #include "data/model/DenseTimeValueModel.h"
Chris@39: #include "data/model/WritableWaveFileModel.h"
Chris@0: 
Chris@0: #include <iostream>
Chris@0: 
Chris@0: RealTimePluginTransform::RealTimePluginTransform(Model *inputModel,
Chris@0:                                                  QString pluginId,
Chris@27:                                                  const ExecutionContext &context,
Chris@0:                                                  QString configurationXml,
Chris@0:                                                  QString units,
Chris@27:                                                  int output) :
Chris@27:     PluginTransform(inputModel, context),
Chris@0:     m_plugin(0),
Chris@27:     m_outputNo(output)
Chris@0: {
Chris@27:     if (!m_context.blockSize) m_context.blockSize = 1024;
Chris@26: 
Chris@0:     std::cerr << "RealTimePluginTransform::RealTimePluginTransform: plugin " << pluginId.toStdString() << ", output " << output << std::endl;
Chris@0: 
Chris@0:     RealTimePluginFactory *factory =
Chris@0: 	RealTimePluginFactory::instanceFor(pluginId);
Chris@0: 
Chris@0:     if (!factory) {
Chris@0: 	std::cerr << "RealTimePluginTransform: No factory available for plugin id \""
Chris@0: 		  << pluginId.toStdString() << "\"" << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     DenseTimeValueModel *input = getInput();
Chris@0:     if (!input) return;
Chris@0: 
Chris@44:     m_plugin = factory->instantiatePlugin(pluginId, 0, 0,
Chris@44:                                           m_input->getSampleRate(),
Chris@27:                                           m_context.blockSize,
Chris@0:                                           input->getChannelCount());
Chris@0: 
Chris@0:     if (!m_plugin) {
Chris@0: 	std::cerr << "RealTimePluginTransform: Failed to instantiate plugin \""
Chris@0: 		  << pluginId.toStdString() << "\"" << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     if (configurationXml != "") {
Chris@0:         PluginXml(m_plugin).setParametersFromXml(configurationXml);
Chris@0:     }
Chris@0: 
Chris@34:     if (m_outputNo >= 0 && m_outputNo >= m_plugin->getControlOutputCount()) {
Chris@0:         std::cerr << "RealTimePluginTransform: Plugin has fewer than desired " << m_outputNo << " control outputs" << std::endl;
Chris@0:         return;
Chris@0:     }
Chris@34: 
Chris@34:     if (m_outputNo == -1) {
Chris@34: 
Chris@52:         size_t outputChannels = m_plugin->getAudioOutputCount();
Chris@52:         if (outputChannels > input->getChannelCount()) {
Chris@52:             outputChannels = input->getChannelCount();
Chris@52:         }
Chris@52: 
Chris@39:         WritableWaveFileModel *model = new WritableWaveFileModel
Chris@52:             (input->getSampleRate(), outputChannels);
Chris@39: 
Chris@39:         m_output = model;
Chris@34: 
Chris@34:     } else {
Chris@0: 	
Chris@34:         SparseTimeValueModel *model = new SparseTimeValueModel
Chris@34:             (input->getSampleRate(), m_context.blockSize, 0.0, 0.0, false);
Chris@0: 
Chris@34:         if (units != "") model->setScaleUnits(units);
Chris@0: 
Chris@34:         m_output = model;
Chris@34:     }
Chris@0: }
Chris@0: 
Chris@0: RealTimePluginTransform::~RealTimePluginTransform()
Chris@0: {
Chris@0:     delete m_plugin;
Chris@0: }
Chris@0: 
Chris@0: DenseTimeValueModel *
Chris@0: RealTimePluginTransform::getInput()
Chris@0: {
Chris@0:     DenseTimeValueModel *dtvm =
Chris@0: 	dynamic_cast<DenseTimeValueModel *>(getInputModel());
Chris@0:     if (!dtvm) {
Chris@0: 	std::cerr << "RealTimePluginTransform::getInput: WARNING: Input model is not conformable to DenseTimeValueModel" << std::endl;
Chris@0:     }
Chris@0:     return dtvm;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: RealTimePluginTransform::run()
Chris@0: {
Chris@0:     DenseTimeValueModel *input = getInput();
Chris@0:     if (!input) return;
Chris@0: 
Chris@39:     SparseTimeValueModel *stvm = dynamic_cast<SparseTimeValueModel *>(m_output);
Chris@39:     WritableWaveFileModel *wwfm = dynamic_cast<WritableWaveFileModel *>(m_output);
Chris@39:     if (!stvm && !wwfm) return;
Chris@0: 
Chris@39:     if (stvm && (m_outputNo >= m_plugin->getControlOutputCount())) return;
Chris@0: 
Chris@0:     size_t sampleRate = input->getSampleRate();
Chris@0:     int channelCount = input->getChannelCount();
Chris@44:     if (!wwfm && m_context.channel != -1) channelCount = 1;
Chris@0: 
Chris@0:     size_t blockSize = m_plugin->getBufferSize();
Chris@0: 
Chris@0:     float **buffers = m_plugin->getAudioInputBuffers();
Chris@0: 
Chris@0:     size_t startFrame = m_input->getStartFrame();
Chris@0:     size_t   endFrame = m_input->getEndFrame();
Chris@0:     size_t blockFrame = startFrame;
Chris@0: 
Chris@0:     size_t prevCompletion = 0;
Chris@0: 
Chris@39:     size_t latency = m_plugin->getLatency();
Chris@39: 
Chris@0:     int i = 0;
Chris@0: 
Chris@0:     while (blockFrame < endFrame) {
Chris@0: 
Chris@0: 	size_t completion =
Chris@0: 	    (((blockFrame - startFrame) / blockSize) * 99) /
Chris@0: 	    (   (endFrame - startFrame) / blockSize);
Chris@0: 
Chris@0: 	size_t got = 0;
Chris@0: 
Chris@0: 	if (channelCount == 1) {
Chris@40:             if (buffers && buffers[0]) {
Chris@40:                 got = input->getValues
Chris@40:                     (m_context.channel, blockFrame, blockFrame + blockSize, buffers[0]);
Chris@40:                 while (got < blockSize) {
Chris@40:                     buffers[0][got++] = 0.0;
Chris@0:                 }
Chris@40:                 if (m_context.channel == -1 && channelCount > 1) {
Chris@40:                     // use mean instead of sum, as plugin input
Chris@40:                     for (size_t i = 0; i < got; ++i) {
Chris@40:                         buffers[0][i] /= channelCount;
Chris@40:                     }
Chris@40:                 }                
Chris@40:             }
Chris@0: 	} else {
Chris@0: 	    for (size_t ch = 0; ch < channelCount; ++ch) {
Chris@40:                 if (buffers && buffers[ch]) {
Chris@40:                     got = input->getValues
Chris@40:                         (ch, blockFrame, blockFrame + blockSize, buffers[ch]);
Chris@40:                     while (got < blockSize) {
Chris@40:                         buffers[ch][got++] = 0.0;
Chris@40:                     }
Chris@40:                 }
Chris@0: 	    }
Chris@0: 	}
Chris@0: 
Chris@0:         m_plugin->run(Vamp::RealTime::frame2RealTime(blockFrame, sampleRate));
Chris@0: 
Chris@39:         if (stvm) {
Chris@0: 
Chris@39:             float value = m_plugin->getControlOutputValue(m_outputNo);
Chris@39: 
Chris@39:             size_t pointFrame = blockFrame;
Chris@39:             if (pointFrame > latency) pointFrame -= latency;
Chris@39:             else pointFrame = 0;
Chris@39: 
Chris@39:             stvm->addPoint(SparseTimeValueModel::Point
Chris@39:                            (pointFrame, value, ""));
Chris@39: 
Chris@39:         } else if (wwfm) {
Chris@39: 
Chris@39:             float **buffers = m_plugin->getAudioOutputBuffers();
Chris@39: 
Chris@40:             if (buffers) {
Chris@40: 
Chris@40:                 //!!! This will fail if any buffers[c] is null or
Chris@40:                 //uninitialised.  The plugin instance should ensure
Chris@40:                 //that that can't happen -- but it doesn't
Chris@40: 
Chris@40:                 if (blockFrame >= latency) {
Chris@40:                     wwfm->addSamples(buffers, blockSize);
Chris@40:                 } else if (blockFrame + blockSize >= latency) {
Chris@40:                     size_t offset = latency - blockFrame;
Chris@40:                     size_t count = blockSize - offset;
Chris@40:                     float **tmp = new float *[channelCount];
Chris@40:                     for (size_t c = 0; c < channelCount; ++c) {
Chris@40:                         tmp[c] = buffers[c] + offset;
Chris@40:                     }
Chris@40:                     wwfm->addSamples(tmp, count);
Chris@40:                     delete[] tmp;
Chris@39:                 }
Chris@39:             }
Chris@39:         }
Chris@0: 
Chris@0: 	if (blockFrame == startFrame || completion > prevCompletion) {
Chris@39: 	    if (stvm) stvm->setCompletion(completion);
Chris@0: 	    prevCompletion = completion;
Chris@0: 	}
Chris@0:         
Chris@0: 	blockFrame += blockSize;
Chris@0:     }
Chris@0:     
Chris@39:     if (stvm) stvm->setCompletion(100);
Chris@39:     if (wwfm) wwfm->sync();
Chris@0: }
Chris@0: