From 145364a8af6a1fec06556221e66d4b724a62fc9a Mon Sep 17 00:00:00 2001 From: tpearson Date: Mon, 1 Mar 2010 18:37:05 +0000 Subject: 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 --- src/gui/seqmanager/TempoSegmentMmapper.cpp | 77 ++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 src/gui/seqmanager/TempoSegmentMmapper.cpp (limited to 'src/gui/seqmanager/TempoSegmentMmapper.cpp') diff --git a/src/gui/seqmanager/TempoSegmentMmapper.cpp b/src/gui/seqmanager/TempoSegmentMmapper.cpp new file mode 100644 index 0000000..1c53922 --- /dev/null +++ b/src/gui/seqmanager/TempoSegmentMmapper.cpp @@ -0,0 +1,77 @@ +/* -*- 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 , + Chris Cannam , + Richard Bown + + 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 "TempoSegmentMmapper.h" + +#include "base/Event.h" +#include "base/RealTime.h" +#include "base/Segment.h" +#include "base/TriggerSegment.h" +#include "document/RosegardenGUIDoc.h" +#include "SegmentMmapper.h" +#include "sound/MappedEvent.h" +#include "SpecialSegmentMmapper.h" +#include + + +namespace Rosegarden +{ + +void TempoSegmentMmapper::dump() +{ + RealTime eventTime; + + Composition& comp = m_doc->getComposition(); + MappedEvent* bufPos = m_mmappedEventBuffer; + + for (int i = 0; i < comp.getTempoChangeCount(); ++i) { + + std::pair tempoChange = comp.getTempoChange(i); + + eventTime = comp.getElapsedRealTime(tempoChange.first); + MappedEvent* mappedEvent = new (bufPos) MappedEvent(); + mappedEvent->setType(MappedEvent::Tempo); + mappedEvent->setEventTime(eventTime); + + // Nasty hack -- we use the instrument ID to pass through the + // raw tempo value, as it has the appropriate range (unlike + // e.g. tempo1 + tempo2). These events are not actually used + // on the sequencer side yet, so this may change to something + // nicer at some point. + mappedEvent->setInstrument(tempoChange.second); + + ++bufPos; + } + + // Store the number of events at the start of the shared memory region + *(size_t *)m_mmappedRegion = (bufPos - m_mmappedEventBuffer); +} + +size_t TempoSegmentMmapper::computeMmappedSize() +{ + return m_doc->getComposition().getTempoChangeCount() * sizeof(MappedEvent); +} + +} -- cgit v1.2.1