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, 210 insertions, 0 deletions

diff --git a/src/commands/segment/AudioSegmentRescaleCommand.cpp b/src/commands/segment/AudioSegmentRescaleCommand.cpp
new file mode 100644
index 0000000..1386783
--- /dev/null
+++ b/src/commands/segment/AudioSegmentRescaleCommand.cpp
@@ -0,0 +1,210 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+ 
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <glaurent@telegraph-road.org>,
+        Chris Cannam        <cannam@all-day-breakfast.com>,
+        Richard Bown        <richard.bown@ferventsoftware.com>
+ 
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+ 
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+ 
+    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.
+*/
+
+
+#include "AudioSegmentRescaleCommand.h"
+
+#include "misc/Strings.h"
+#include "base/Event.h"
+#include "base/Composition.h"
+#include "base/NotationTypes.h"
+#include "base/Segment.h"
+#include "document/RosegardenGUIDoc.h"
+#include "sound/AudioFileTimeStretcher.h"
+#include "sound/AudioFileManager.h"
+#include "gui/widgets/ProgressDialog.h"
+#include <qstring.h>
+
+
+namespace Rosegarden
+{
+
+AudioSegmentRescaleCommand::AudioSegmentRescaleCommand(RosegardenGUIDoc *doc,
+                                                       Segment *s,
+						       float ratio) :
+    KNamedCommand(getGlobalName()),
+    m_afm(&doc->getAudioFileManager()),
+    m_stretcher(new AudioFileTimeStretcher(m_afm)),
+    m_segment(s),
+    m_newSegment(0),
+    m_fid(-1),
+    m_timesGiven(false),
+    m_startTime(0),
+    m_endMarkerTime(0),
+    m_ratio(ratio),
+    m_detached(false)
+{
+    // nothing
+}
+
+AudioSegmentRescaleCommand::AudioSegmentRescaleCommand(RosegardenGUIDoc *doc,
+                                                       Segment *s,
+						       float ratio,
+                                                       timeT st,
+                                                       timeT emt) :
+    KNamedCommand(getGlobalName()),
+    m_afm(&doc->getAudioFileManager()),
+    m_stretcher(new AudioFileTimeStretcher(m_afm)),
+    m_segment(s),
+    m_newSegment(0),
+    m_fid(-1),
+    m_timesGiven(true),
+    m_startTime(st),
+    m_endMarkerTime(emt),
+    m_ratio(ratio),
+    m_detached(false)
+{
+    // nothing
+}
+
+AudioSegmentRescaleCommand::~AudioSegmentRescaleCommand()
+{
+    delete m_stretcher;
+
+    if (m_detached) {
+        delete m_segment;
+    } else {
+        delete m_newSegment;
+    }
+}
+
+void
+AudioSegmentRescaleCommand::connectProgressDialog(ProgressDialog *dlg)
+{
+    QObject::connect(m_stretcher, SIGNAL(setProgress(int)),
+                     dlg->progressBar(), SLOT(setValue(int)));
+    QObject::connect(dlg, SIGNAL(cancelClicked()),
+                     m_stretcher, SLOT(slotStopTimestretch()));
+}
+ 
+void
+AudioSegmentRescaleCommand::disconnectProgressDialog(ProgressDialog *dlg)
+{
+    QObject::disconnect(m_stretcher, SIGNAL(setProgress(int)),
+                        dlg->progressBar(), SLOT(setValue(int)));
+    QObject::disconnect(dlg, SIGNAL(cancelClicked()),
+                        m_stretcher, SLOT(slotStopTimestretch()));
+}
+
+void
+AudioSegmentRescaleCommand::execute()
+{
+    timeT startTime = m_segment->getStartTime();
+
+    if (m_segment->getType() != Segment::Audio) {
+        return;
+    }
+
+    bool failed = false;
+
+    if (!m_newSegment) {
+
+        m_newSegment = new Segment(*m_segment);
+
+        QString oldLabel = strtoqstr(m_segment->getLabel());
+        if (!oldLabel.endsWith(i18n("(rescaled)"))) {
+            m_newSegment->setLabel(qstrtostr(i18n("%1 (rescaled)").arg
+                                             (oldLabel)));
+        }
+
+        AudioFileId sourceFileId = m_segment->getAudioFileId();
+        float absoluteRatio = m_ratio;
+
+        std::cerr << "AudioSegmentRescaleCommand: segment file id " << sourceFileId << ", given ratio " << m_ratio << std::endl;
+
+        if (m_segment->getStretchRatio() != 1.f &&
+            m_segment->getStretchRatio() != 0.f) {
+            sourceFileId = m_segment->getUnstretchedFileId();
+            absoluteRatio *= m_segment->getStretchRatio();
+            std::cerr << "AudioSegmentRescaleCommand: unstretched file id " << sourceFileId << ", prev ratio " << m_segment->getStretchRatio() << ", resulting ratio " << absoluteRatio << std::endl;
+        }
+
+        if (!m_timesGiven) {
+            m_endMarkerTime = m_segment->getStartTime() +
+                (m_segment->getEndMarkerTime() - m_segment->getStartTime()) * m_ratio;
+        }
+
+        try {
+            m_fid = m_stretcher->getStretchedAudioFile(sourceFileId,
+                                                       absoluteRatio);
+            m_newSegment->setAudioFileId(m_fid);
+            m_newSegment->setUnstretchedFileId(sourceFileId);
+            m_newSegment->setStretchRatio(absoluteRatio);
+            m_newSegment->setAudioStartTime(m_segment->getAudioStartTime() *
+                                            m_ratio);
+            if (m_timesGiven) {
+                m_newSegment->setStartTime(m_startTime);
+                m_newSegment->setAudioEndTime(m_segment->getAudioEndTime() *
+                                              m_ratio);
+                m_newSegment->setEndMarkerTime(m_endMarkerTime);
+            } else {
+                m_newSegment->setEndMarkerTime(m_endMarkerTime);
+                m_newSegment->setAudioEndTime(m_segment->getAudioEndTime() *
+                                              m_ratio);
+            }
+        } catch (SoundFile::BadSoundFileException e) {
+            std::cerr << "AudioSegmentRescaleCommand: ERROR: BadSoundFileException: "
+                      << e.getMessage() << std::endl;
+            delete m_newSegment;
+            m_newSegment = 0;
+            m_fid = -1;
+            failed = true;
+        } catch (AudioFileManager::BadAudioPathException e) {
+            std::cerr << "AudioSegmentRescaleCommand: ERROR: BadAudioPathException: "
+                      << e.getMessage() << std::endl;
+            delete m_newSegment;
+            m_newSegment = 0;
+            m_fid = -1;
+            failed = true;
+        } catch (AudioFileTimeStretcher::CancelledException e) {
+            std::cerr << "AudioSegmentRescaleCommand: ERROR: Rescale cancelled" << std::endl;
+            delete m_newSegment;
+            m_newSegment = 0;
+            m_fid = -1;
+            failed = true;
+        }
+    }
+
+    if (failed) return;
+
+    m_segment->getComposition()->addSegment(m_newSegment);
+    m_segment->getComposition()->detachSegment(m_segment);
+
+//    m_newSegment->setEndMarkerTime
+//    (startTime + rescale(m_segment->getEndMarkerTime() - startTime));
+
+    m_detached = true;
+}
+
+void
+AudioSegmentRescaleCommand::unexecute()
+{
+    if (m_newSegment) {
+        m_newSegment->getComposition()->addSegment(m_segment);
+        m_newSegment->getComposition()->detachSegment(m_newSegment);
+        m_detached = false;
+    }
+}
+
+}