2 Copyright (C) 2006 Paul Davis
3 Written by Dave Robillard, 2006
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_midi_source_h__
21 #define __ardour_midi_source_h__
27 #include <glibmm/thread.h>
29 #include <sigc++/signal.h>
31 #include <ardour/source.h>
32 #include <ardour/ardour.h>
33 #include <pbd/stateful.h>
34 #include <pbd/xml++.h>
42 /** Source for MIDI data */
43 class MidiSource : public Source
46 MidiSource (Session& session, string name);
47 MidiSource (Session& session, const XMLNode&);
48 virtual ~MidiSource ();
50 virtual nframes_t read (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset) const;
51 virtual nframes_t write (MidiRingBuffer& src, nframes_t cnt);
53 virtual void mark_for_remove() = 0;
54 virtual void mark_streaming_write_completed () {}
56 string captured_for() const { return _captured_for; }
57 void set_captured_for (string str) { _captured_for = str; }
59 uint32_t read_data_count() const { return _read_data_count; }
60 uint32_t write_data_count() const { return _write_data_count; }
62 static sigc::signal<void,MidiSource*> MidiSourceCreated;
64 // The MIDI equivalent to "peaks"
65 static int start_view_data_thread ();
66 static void stop_view_data_thread ();
67 mutable sigc::signal<void,nframes_t,nframes_t> ViewDataRangeReady;
69 XMLNode& get_state ();
70 int set_state (const XMLNode&);
73 virtual nframes_t read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset) const = 0;
74 virtual nframes_t write_unlocked (MidiRingBuffer& dst, nframes_t cnt) = 0;
76 mutable Glib::Mutex _lock;
78 mutable uint32_t _read_data_count; ///< modified in read()
79 mutable uint32_t _write_data_count; ///< modified in write()
82 bool file_changed (string path);
87 #endif /* __ardour_midi_source_h__ */