2 Copyright (C) 2011 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "libardour-config.h"
26 #include <glibmm/fileutils.h>
27 #include <glibmm/miscutils.h>
29 #include "pbd/error.h"
30 #include "pbd/convert.h"
31 #include "pbd/enumwriter.h"
33 #include "ardour/midi_playlist.h"
34 #include "ardour/midi_playlist_source.h"
35 #include "ardour/midi_region.h"
36 #include "ardour/debug.h"
37 #include "ardour/filename_extensions.h"
38 #include "ardour/session.h"
39 #include "ardour/session_directory.h"
40 #include "ardour/session_playlists.h"
41 #include "ardour/source_factory.h"
46 using namespace ARDOUR;
49 /*******************************************************************************
50 As of May 2011, it appears too complex to support compound regions for MIDI
51 because of the need to be able to edit the data represented by the region. It
52 seems that it would be a better idea to render the consituent regions into a
53 new MIDI file and create a new region based on that, an operation we have been
56 This code has been in place as a stub in case anyone gets any brilliant ideas
57 on other ways to approach this issue.
58 ********************************************************************************/
60 MidiPlaylistSource::MidiPlaylistSource (Session& s, const ID& orig, const std::string& name, boost::shared_ptr<MidiPlaylist> p,
61 uint32_t /*chn*/, frameoffset_t begin, framecnt_t len, Source::Flag flags)
62 : Source (s, DataType::MIDI, name)
63 , MidiSource (s, name, flags)
64 , PlaylistSource (s, orig, name, p, DataType::MIDI, begin, len, flags)
68 MidiPlaylistSource::MidiPlaylistSource (Session& s, const XMLNode& node)
70 , MidiSource (s, node)
71 , PlaylistSource (s, node)
73 /* PlaylistSources are never writable, renameable, removable or destructive */
74 _flags = Flag (_flags & ~(Writable|CanRename|Removable|RemovableIfEmpty|RemoveAtDestroy|Destructive));
76 /* ancestors have already called ::set_state() in their XML-based
80 if (set_state (node, Stateful::loading_state_version, false)) {
81 throw failed_constructor ();
85 MidiPlaylistSource::~MidiPlaylistSource ()
90 MidiPlaylistSource::get_state ()
92 XMLNode& node (MidiSource::get_state ());
94 /* merge PlaylistSource state */
96 PlaylistSource::add_state (node);
103 MidiPlaylistSource::set_state (const XMLNode& node, int version)
105 return set_state (node, version, true);
109 MidiPlaylistSource::set_state (const XMLNode& node, int version, bool with_descendants)
111 if (with_descendants) {
112 if (Source::set_state (node, version) ||
113 MidiSource::set_state (node, version) ||
114 PlaylistSource::set_state (node, version)) {
123 MidiPlaylistSource::length (framepos_t) const
125 pair<framepos_t,framepos_t> extent = _playlist->get_extent();
126 return extent.second - extent.first;
130 MidiPlaylistSource::read_unlocked (Evoral::EventSink<framepos_t>& dst,
131 framepos_t /*position*/,
132 framepos_t start, framecnt_t cnt,
133 MidiStateTracker*) const
135 boost::shared_ptr<MidiPlaylist> mp = boost::dynamic_pointer_cast<MidiPlaylist> (_playlist);
141 return mp->read (dst, start, cnt);
145 MidiPlaylistSource::write_unlocked (MidiRingBuffer<framepos_t>& dst,
149 fatal << string_compose (_("programming error: %1"), "MidiPlaylistSource::write_unlocked() called - should be impossible") << endmsg;
155 MidiPlaylistSource::append_event_unlocked_beats(const Evoral::Event<Evoral::MusicalTime>& /*ev*/)
157 fatal << string_compose (_("programming error: %1"), "MidiPlaylistSource::append_event_unlocked_beats() called - should be impossible") << endmsg;
162 MidiPlaylistSource::append_event_unlocked_frames(const Evoral::Event<framepos_t>& /* ev */, framepos_t /*source_start*/)
164 fatal << string_compose (_("programming error: %1"), "MidiPlaylistSource::append_event_unlocked_frames() called - should be impossible") << endmsg;
169 MidiPlaylistSource::load_model (bool, bool)
175 MidiPlaylistSource::destroy_model ()
181 MidiPlaylistSource::flush_midi ()
187 MidiPlaylistSource::empty () const
189 return !_playlist || _playlist->empty();