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, 151 insertions, 0 deletions

diff --git a/libs/ardour/ardour/smf_source.h b/libs/ardour/ardour/smf_source.h
new file mode 100644
index 0000000000..88bf1e5d13
--- /dev/null
+++ b/libs/ardour/ardour/smf_source.h
@@ -0,0 +1,151 @@
+/*
+    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_smf_filesource_h__ 
+#define __ardour_smf_filesource_h__
+
+#include <cstdio>
+#include <time.h>
+
+#include <ardour/midi_source.h>
+
+namespace ARDOUR {
+
+class MidiRingBuffer;
+
+/** Standard Midi File (Type 0) Source */
+class SMFSource : public MidiSource {
+  public:
+	enum Flag {
+		Writable = 0x1,
+		CanRename = 0x2,
+		Broadcast = 0x4,
+		Removable = 0x8,
+		RemovableIfEmpty = 0x10,
+		RemoveAtDestroy = 0x20,
+		BuildPeaks = 0x40
+	};
+	
+	/** Constructor for existing external-to-session files */
+	SMFSource (Session& session, std::string path, Flag flags = Flag(0));
+
+	/* Constructor for existing in-session files */
+	SMFSource (Session& session, const XMLNode&);
+
+	virtual ~SMFSource ();
+
+	/* this block of methods do nothing for regular file sources, but are significant
+	   for files used in destructive recording.
+	*/
+	// FIXME and thus are useless for MIDI.. but make MidiDiskstream compile easier! :)
+
+	virtual nframes_t last_capture_start_frame() const { return 0; }
+	virtual void      mark_capture_start (nframes_t) {}
+	virtual void      mark_capture_end () {}
+	virtual void      clear_capture_marks() {}
+
+	bool set_name (const std::string& newname) { return (set_source_name(newname, false) == 0); }
+	int set_source_name (string newname, bool destructive);
+	
+	static bool safe_file_extension (const Glib::ustring& path);
+
+	Glib::ustring path() const { return _path; }
+
+	void set_allow_remove_if_empty (bool yn);
+	void mark_for_remove();
+
+	void append_event_unlocked(EventTimeUnit unit, const MIDI::Event& ev);
+
+	int flush_header ();
+	int flush_footer ();
+	
+	int move_to_trash (const string trash_dir_name);
+
+	bool is_empty () const;
+	void mark_streaming_midi_write_started (NoteMode mode, nframes_t start_time);
+	void mark_streaming_write_completed ();
+
+	void   mark_take (string);
+	string take_id() const { return _take_id; }
+
+	static void set_search_path (string);
+	static void set_header_position_offset (nframes_t offset, bool negative);
+
+	XMLNode& get_state ();
+	int set_state (const XMLNode&);
+
+	void seek_to(nframes_t time);
+	
+	void load_model(bool lock=true, bool force_reload=false);
+	void destroy_model();
+
+	uint16_t ppqn() const { return _ppqn; }
+
+  private:
+
+	int init (string idstr, bool must_exist);
+
+	nframes_t read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cn, nframes_t stamp_offset, nframes_t negative_stamp_offset) const;
+	nframes_t write_unlocked (MidiRingBuffer& dst, nframes_t cnt);
+
+	bool find (std::string path, bool must_exist, bool& is_new);
+	bool removable() const;
+	bool writable() const { return _flags & Writable; }
+
+	int  open();
+	void close();
+	
+	/**
+	 * This method is only used by flush_footer() to find the right seek position 
+	 * for the footer (at the end after recording or -4 offset ro SEEK_END
+	 * if a footer is already present)
+	 */
+	void seek_to_footer_position();
+	
+	/**
+	 * write the track footer at the current seek position
+	 */
+	void write_footer();
+
+	void     write_chunk_header(const char id[4], uint32_t length);
+	void     write_chunk(const char id[4], uint32_t length, void* data);
+	size_t   write_var_len(uint32_t val);
+	uint32_t read_var_len() const;
+	int      read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const;
+
+	static const uint16_t _ppqn = 19200;
+
+	Glib::ustring  _path;
+	Flag           _flags;
+	string         _take_id;
+	bool           _allow_remove_if_empty;
+	FILE*          _fd;
+	double         _last_ev_time; ///< last frame time written, relative to source start
+	uint32_t       _track_size;
+	uint32_t       _header_size; ///< size of SMF header, including MTrk chunk header
+	bool           _empty; ///< true iff file contains (non-empty) events
+
+	static string _search_path;
+};
+
+}; /* namespace ARDOUR */
+
+#endif /* __ardour_smf_filesource_h__ */
+