rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 119 insertions, 0 deletions

diff --git a/libs/ardour/ardour/midi_source.h b/libs/ardour/ardour/midi_source.h
new file mode 100644
index 0000000000..997f3f9d69
--- /dev/null
+++ b/libs/ardour/ardour/midi_source.h
@@ -0,0 +1,119 @@
+/*
+    Copyright (C) 2006 Paul Davis 
+	Written by Dave Robillard, 2006
+
+    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.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __ardour_midi_source_h__
+#define __ardour_midi_source_h__
+
+#include <string>
+
+#include <time.h>
+
+#include <glibmm/thread.h>
+
+#include <sigc++/signal.h>
+
+#include <ardour/source.h>
+#include <ardour/ardour.h>
+#include <ardour/buffer.h>
+#include <ardour/midi_model.h>
+#include <pbd/stateful.h>
+#include <pbd/xml++.h>
+
+using std::string;
+
+namespace ARDOUR {
+
+class MidiRingBuffer;
+
+/** Source for MIDI data */
+class MidiSource : public Source
+{
+  public:
+	MidiSource (Session& session, string name);
+	MidiSource (Session& session, const XMLNode&);
+	virtual ~MidiSource ();
+	
+	/* Stub Readable interface */
+	virtual nframes64_t read (Sample*, nframes64_t pos, nframes64_t cnt, int channel) const { return 0; }
+	virtual nframes64_t readable_length() const { return length(); }
+	virtual uint32_t    n_channels () const { return 1; }
+	
+	// FIXME: integrate this with the Readable::read interface somehow
+	virtual nframes_t midi_read (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset, nframes_t negative_stamp_offset) const;
+	virtual nframes_t midi_write (MidiRingBuffer& src, nframes_t cnt);
+
+	virtual void append_event_unlocked(EventTimeUnit unit, const MIDI::Event& ev) = 0;
+
+	virtual void mark_for_remove() = 0;
+	virtual void mark_streaming_midi_write_started (NoteMode mode, nframes_t start_time);
+	virtual void mark_streaming_write_started ();
+	virtual void mark_streaming_write_completed ();
+	
+	uint64_t timeline_position ()                   { return _timeline_position; }
+	void     set_timeline_position (nframes_t when) { _timeline_position = when; }
+	
+	virtual void session_saved();
+
+	string captured_for() const { return _captured_for; }
+	void   set_captured_for (string str) { _captured_for = str; }
+
+	uint32_t read_data_count()  const { return _read_data_count; }
+	uint32_t write_data_count() const { return _write_data_count; }
+
+	static sigc::signal<void,MidiSource*> MidiSourceCreated;
+	       
+	// Signal a range of recorded data is available for reading from model()
+	mutable sigc::signal<void,nframes_t,nframes_t> ViewDataRangeReady;
+	
+	XMLNode& get_state ();
+	int set_state (const XMLNode&);
+	
+	bool length_mutable() const { return true; }
+
+	virtual void load_model(bool lock=true, bool force_reload=false) = 0;
+	virtual void destroy_model() = 0;
+
+	void set_note_mode(NoteMode mode) { if (_model) _model->set_note_mode(mode); }
+
+	boost::shared_ptr<MidiModel> model() { return _model; }
+	void set_model(boost::shared_ptr<MidiModel> m) { _model = m; }
+
+  protected:
+	virtual int flush_header() = 0;
+	virtual int flush_footer() = 0;
+	
+	virtual nframes_t read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset, nframes_t negative_stamp_offset) const = 0;
+	virtual nframes_t write_unlocked (MidiRingBuffer& dst, nframes_t cnt) = 0;
+	
+	mutable Glib::Mutex _lock;
+	string              _captured_for;
+	uint64_t            _timeline_position;
+	mutable uint32_t    _read_data_count;  ///< modified in read()
+	mutable uint32_t    _write_data_count; ///< modified in write()
+
+	boost::shared_ptr<MidiModel> _model;
+	bool                         _writing;
+
+  private:
+	bool file_changed (string path);
+};
+
+}
+
+#endif /* __ardour_midi_source_h__ */