Chris@137: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@137: 
Chris@137: /*
Chris@137:     Sonic Annotator
Chris@137:     A utility for batch feature extraction from audio files.
Chris@137:     Mark Levy, Chris Sutton and Chris Cannam, Queen Mary, University of London.
Chris@137:     Copyright 2007-2014 QMUL.
Chris@137: 
Chris@137:     This program is free software; you can redistribute it and/or
Chris@137:     modify it under the terms of the GNU General Public License as
Chris@137:     published by the Free Software Foundation; either version 2 of the
Chris@137:     License, or (at your option) any later version.  See the file
Chris@137:     COPYING included with this distribution for more information.
Chris@137: */
Chris@137: 
Chris@137: #include "MIDIFeatureWriter.h"
Chris@137: 
Chris@137: using namespace std;
Chris@137: using Vamp::Plugin;
Chris@137: using Vamp::PluginBase;
Chris@137: 
Chris@137: #include "base/Exceptions.h"
Chris@137: #include "data/fileio/MIDIFileWriter.h"
Chris@137: 
Chris@137: MIDIFeatureWriter::MIDIFeatureWriter() :
Chris@137:     FileFeatureWriter(SupportOneFilePerTrackTransform |
Chris@137:                       SupportOneFilePerTrack |
Chris@137:                       SupportOneFileTotal,
Chris@137:                       "mid")
Chris@137: {
Chris@137: }
Chris@137: 
Chris@137: MIDIFeatureWriter::~MIDIFeatureWriter()
Chris@137: {
Chris@137: }
Chris@137: 
Chris@137: MIDIFeatureWriter::ParameterList
Chris@137: MIDIFeatureWriter::getSupportedParameters() const
Chris@137: {
Chris@137:     ParameterList pl = FileFeatureWriter::getSupportedParameters();
Chris@137:     return pl;
Chris@137: }
Chris@137: 
Chris@137: void
Chris@137: MIDIFeatureWriter::setParameters(map<string, string> &params)
Chris@137: {
Chris@137:     FileFeatureWriter::setParameters(params);
Chris@137: }
Chris@137: 
Chris@137: void
Chris@137: MIDIFeatureWriter::setTrackMetadata(QString, TrackMetadata)
Chris@137: {
Chris@137:     cerr << "MIDIFeatureWriter::setTrackMetadata: not supported (yet?)" << endl;
Chris@137: }
Chris@137: 
Chris@137: void
Chris@137: MIDIFeatureWriter::write(QString trackId,
Chris@137: 			 const Transform &transform,
Chris@137: 			 const Plugin::OutputDescriptor& output,
Chris@137: 			 const Plugin::FeatureList& features,
Chris@137: 			 std::string summaryType)
Chris@137: {
Chris@140:     QString transformId = transform.getIdentifier();
Chris@140: 
Chris@140:     QString filename = getOutputFilename(trackId, transformId);
Chris@137:     if (filename == "") {
Chris@140: 	throw FailedToOpenOutputStream(trackId, transformId);
Chris@137:     }
Chris@137: 
Chris@140:     if (m_rates.find(filename) == m_rates.end()) {
Chris@140:         // If the output is FixedSampleRate, we draw the sample rate
Chris@140:         // from the output descriptor; otherwise from the transform
Chris@140:         float sampleRate;
Chris@140:         if (output.sampleType == Plugin::OutputDescriptor::FixedSampleRate) {
Chris@140:             sampleRate = output.sampleRate;
Chris@140:         } else {
Chris@140:             sampleRate = transform.getSampleRate();
Chris@140:         }
Chris@140:         m_rates[filename] = sampleRate;
Chris@140:     }
Chris@140: 
Chris@140:     if (m_fileTransforms[filename].find(transformId) == 
Chris@140:         m_fileTransforms[filename].end()) {
Chris@140: 
Chris@140:         // This transform is new to the file, give it a channel number
Chris@140: 
Chris@140:         int channel = m_nextChannels[filename];
Chris@140:         m_nextChannels[filename] = channel + 1;
Chris@140: 
Chris@140:         m_fileTransforms[filename].insert(transformId);
Chris@140:         m_channels[transformId] = channel;
Chris@140:     }
Chris@140: 
Chris@140:     NoteList notes = m_notes[filename];
Chris@140: 
Chris@140:     
Chris@140: 
Chris@140:     m_notes[filename] = notes;
Chris@137: }
Chris@137: 
Chris@137: void
Chris@137: MIDIFeatureWriter::finish()
Chris@137: {
Chris@137:     for (NoteMap::const_iterator i = m_notes.begin(); i != m_notes.end(); ++i) {
Chris@137: 
Chris@137: 	QString filename = i->first;
Chris@137: 	NoteList notes = i->second;
Chris@137: 	float rate = m_rates[filename];
Chris@137: 
Chris@137: 	TrivialNoteExportable exportable(notes);
Chris@137: 
Chris@137: 	{
Chris@137: 	    MIDIFileWriter writer(filename, &exportable, rate);
Chris@137: 	    if (!writer.isOK()) {
Chris@137: 		cerr << "ERROR: Failed to create MIDI writer: " 
Chris@137: 		     << writer.getError() << endl;
Chris@137: 		throw FileOperationFailed(filename, "create MIDI writer");
Chris@137: 	    }
Chris@137: 	    writer.write();
Chris@137: 	}
Chris@137:     }
Chris@137: }
Chris@137: