Added old abandoned KDE3 version of the RoseGarden MIDI tool

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/rosegarden@1097595 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 327 insertions, 0 deletions

diff --git a/src/sound/PeakFileManager.cpp b/src/sound/PeakFileManager.cpp
new file mode 100644
index 0000000..10293e6
--- /dev/null
+++ b/src/sound/PeakFileManager.cpp
@@ -0,0 +1,327 @@
+// -*- c-basic-offset: 4 -*-
+
+/*
+    Rosegarden
+    A sequencer and musical notation editor.
+ 
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+ 
+    The moral right of the authors to claim authorship of this work
+    has been asserted.
+ 
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+
+// Accepts a file handle positioned somewhere in sample data (could
+// be at the start) along with the necessary meta information for
+// decoding (channels, bits per sample) and turns the sample data
+// into peak data and generates a BWF format peak chunk file.  This
+// file can exist by itself (in the case this is being generated
+// by a WAV) or be accomodated inside a BWF format file.
+//
+//
+
+#include <string>
+#include <vector>
+
+#include <qobject.h>
+
+#include "PeakFileManager.h"
+#include "AudioFile.h"
+#include "RealTime.h"
+#include "PeakFile.h"
+
+namespace Rosegarden
+{
+
+
+PeakFileManager::PeakFileManager():
+        m_updatePercentage(0),
+        m_currentPeakFile(0)
+{}
+
+PeakFileManager::~PeakFileManager()
+{}
+
+// Inserts PeakFile based on AudioFile if it doesn't already exist
+bool
+PeakFileManager::insertAudioFile(AudioFile *audioFile)
+{
+    std::vector<PeakFile*>::iterator it;
+
+    for (it = m_peakFiles.begin(); it != m_peakFiles.end(); it++) {
+        if ((*it)->getAudioFile()->getId() == audioFile->getId())
+            return false;
+    }
+
+    /*
+    std::cout << "PeakFileManager::insertAudioFile - creating peak file "
+              << m_peakFiles.size() + 1
+              << " for \"" << audioFile->getFilename()
+              << "\"" << std::endl;
+    */
+
+    // Insert
+    m_peakFiles.push_back(new PeakFile(audioFile));
+
+    return true;
+}
+
+// Removes peak file from PeakFileManager - doesn't affect audioFile
+//
+bool
+PeakFileManager::removeAudioFile(AudioFile *audioFile)
+{
+    std::vector<PeakFile*>::iterator it;
+
+    for (it = m_peakFiles.begin(); it != m_peakFiles.end(); it++) {
+        if ((*it)->getAudioFile()->getId() == audioFile->getId()) {
+            if (m_currentPeakFile == *it)
+                m_currentPeakFile = 0;
+            delete *it;
+            m_peakFiles.erase(it);
+            return true;
+        }
+    }
+
+    return false;
+}
+
+// Auto-insert PeakFile into manager if it doesn't already exist
+//
+PeakFile*
+PeakFileManager::getPeakFile(AudioFile *audioFile)
+{
+    std::vector<PeakFile*>::iterator it;
+    PeakFile *ptr = 0;
+
+    while (ptr == 0) {
+        for (it = m_peakFiles.begin(); it != m_peakFiles.end(); it++)
+            if ((*it)->getAudioFile()->getId() == audioFile->getId())
+                ptr = *it;
+
+        // If nothing is found then insert and retry
+        //
+        if (ptr == 0) {
+            // Insert - if we fail we return as empty
+            //
+            if (insertAudioFile(audioFile) == false)
+                return 0;
+        }
+    }
+
+    return ptr;
+}
+
+
+// Does a given AudioFile have a valid peak file or peak chunk?
+//
+bool
+PeakFileManager::hasValidPeaks(AudioFile *audioFile)
+{
+    if (audioFile->getType() == WAV) {
+        // Check external peak file
+        PeakFile *peakFile = getPeakFile(audioFile);
+
+        if (peakFile == 0) {
+#ifdef DEBUG_PEAKFILEMANAGER
+            std::cerr << "PeakFileManager::hasValidPeaks - no peak file found"
+            << std::endl;
+#endif
+
+            return false;
+        }
+        // If it doesn't open and parse correctly
+        if (peakFile->open() == false)
+            return false;
+
+        // or if the data is old or invalid
+        if (peakFile->isValid() == false)
+            return false;
+
+    } else if (audioFile->getType() == BWF) {
+        // check internal peak chunk
+    } else {
+#ifdef DEBUG_PEAKFILEMANAGER
+        std::cout << "PeakFileManager::hasValidPeaks - unsupported file type"
+        << std::endl;
+#endif
+
+        return false;
+    }
+
+    return true;
+
+}
+
+// Generate the peak file.  Checks to see if peak file exists
+// already and if so if it's up to date.  If it isn't then we
+// regenerate.
+//
+void
+PeakFileManager::generatePeaks(AudioFile *audioFile,
+                               unsigned short updatePercentage)
+{
+#ifdef DEBUG_PEAKFILEMANAGER
+    std::cout << "PeakFileManager::generatePeaks - generating peaks for \""
+    << audioFile->getFilename() << "\"" << std::endl;
+#endif
+
+    if (audioFile->getType() == WAV) {
+        m_currentPeakFile = getPeakFile(audioFile);
+
+        QObject::connect(m_currentPeakFile, SIGNAL(setProgress(int)),
+                         this, SIGNAL(setProgress(int)));
+
+        // Just write out a peak file
+        //
+        if (m_currentPeakFile->write(updatePercentage) == false) {
+            std::cerr << "Can't write peak file for " << audioFile->getFilename() << " - no preview generated" << std::endl;
+            throw BadPeakFileException
+            (audioFile->getFilename(), __FILE__, __LINE__);
+        }
+
+        // The m_currentPeakFile might have been cancelled (see stopPreview())
+        //
+        if (m_currentPeakFile) {
+            // close writes out important things
+            m_currentPeakFile->close();
+            m_currentPeakFile->disconnect();
+        }
+    } else if (audioFile->getType() == BWF) {
+        // write the file out and incorporate the peak chunk
+    } else {
+#ifdef DEBUG_PEAKFILEMANAGER
+        std::cerr << "PeakFileManager::generatePeaks - unsupported file type"
+        << std::endl;
+#endif
+
+        return ;
+    }
+
+    m_currentPeakFile = 0;
+
+}
+
+std::vector<float>
+PeakFileManager::getPreview(AudioFile *audioFile,
+                            const RealTime &startTime,
+                            const RealTime &endTime,
+                            int width,
+                            bool showMinima)
+{
+    std::vector<float> rV;
+
+    // If we've got no channels then the audio file hasn't
+    // completed (recording) - so don't generate a preview
+    //
+    if (audioFile->getChannels() == 0)
+        return rV;
+
+    if (audioFile->getType() == WAV) {
+        PeakFile *peakFile = getPeakFile(audioFile);
+
+        // just write out a peak file
+        try {
+            peakFile->open();
+            rV = peakFile->getPreview(startTime,
+                                      endTime,
+                                      width,
+                                      showMinima);
+        } catch (SoundFile::BadSoundFileException e) {
+#ifdef DEBUG_PEAKFILEMANAGER
+            std::cout << "PeakFileManager::getPreview "
+            << "\"" << e << "\"" << std::endl;
+#else
+
+            ;
+#endif
+
+            throw BadPeakFileException(e);
+        }
+    } else if (audioFile->getType() == BWF) {
+        // write the file out and incorporate the peak chunk
+    }
+#ifdef DEBUG_PEAKFILEMANAGER
+    else {
+        std::cerr << "PeakFileManager::getPreview - unsupported file type"
+        << std::endl;
+    }
+#endif
+
+    return rV;
+}
+
+void
+PeakFileManager::clear()
+{
+    std::vector<PeakFile*>::iterator it;
+
+    for (it = m_peakFiles.begin(); it != m_peakFiles.end(); it++)
+        delete (*it);
+
+    m_peakFiles.erase(m_peakFiles.begin(), m_peakFiles.end());
+
+    m_currentPeakFile = 0;
+}
+
+
+std::vector<SplitPointPair>
+PeakFileManager::getSplitPoints(AudioFile *audioFile,
+                                const RealTime &startTime,
+                                const RealTime &endTime,
+                                int threshold,
+                                const RealTime &minTime)
+{
+    PeakFile *peakFile = getPeakFile(audioFile);
+
+    if (peakFile == 0)
+        return std::vector<SplitPointPair>();
+
+    return peakFile->getSplitPoints(startTime,
+                                    endTime,
+                                    threshold,
+                                    minTime);
+
+}
+
+void
+PeakFileManager::stopPreview()
+{
+    if (m_currentPeakFile) {
+        // Stop processing
+        //
+        QString fileName = QString(m_currentPeakFile->getFilename().data());
+        m_currentPeakFile->setProcessingPeaks(false);
+        m_currentPeakFile->disconnect();
+
+        QFile file(fileName);
+        bool removed = file.remove();
+
+#ifdef DEBUG_PEAKFILEMANAGER
+
+        if (removed) {
+            std::cout << "PeakFileManager::stopPreview() - removed preview"
+            << std::endl;
+        }
+#endif
+        //delete m_currentPeakFile;
+        m_currentPeakFile = 0;
+    }
+}
+
+
+
+
+}
+
+
+#include "PeakFileManager.moc"