2 Copyright (C) 2000 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.
18 $Id: diskstream.h 579 2006-06-12 19:56:37Z essej $
21 #ifndef __ardour_midi_diskstream_h__
22 #define __ardour_midi_diskstream_h__
34 #include "pbd/fastlog.h"
35 #include "pbd/ringbufferNPT.h"
37 #include "ardour/ardour.h"
38 #include "ardour/diskstream.h"
39 #include "ardour/midi_playlist.h"
40 #include "ardour/midi_ring_buffer.h"
41 #include "ardour/utils.h"
55 class MidiDiskstream : public Diskstream
58 MidiDiskstream (Session &, const string& name, Diskstream::Flag f = Recordable);
59 MidiDiskstream (Session &, const XMLNode&);
62 float playback_buffer_load() const;
63 float capture_buffer_load() const;
65 void get_playback (MidiBuffer& dst, framecnt_t);
66 void flush_playback (framepos_t, framepos_t);
68 void set_record_enabled (bool yn);
70 void reset_tracker ();
72 boost::shared_ptr<MidiPlaylist> midi_playlist () { return boost::dynamic_pointer_cast<MidiPlaylist>(_playlist); }
74 int use_playlist (boost::shared_ptr<Playlist>);
75 int use_new_playlist ();
76 int use_copy_playlist ();
78 bool set_name (std::string const &);
81 XMLNode& get_state(void);
82 int set_state(const XMLNode&, int version);
84 void ensure_jack_monitors_input (bool);
86 boost::shared_ptr<SMFSource> write_source () { return _write_source; }
88 int set_destructive (bool yn); // doom!
90 void set_note_mode (NoteMode m);
92 /** Emitted when some MIDI data has been received for recording.
93 * Parameter is the source that it is destined for.
94 * A caller can get a copy of the data with get_gui_feed_buffer ()
96 PBD::Signal1<void, boost::weak_ptr<MidiSource> > DataRecorded;
98 boost::shared_ptr<MidiBuffer> get_gui_feed_buffer () const;
101 friend class Session;
104 /* the Session is the only point of access for these
105 because they require that the Session is "inactive"
106 while they are called.
109 void set_pending_overwrite(bool);
110 int overwrite_existing_buffers ();
111 void set_block_size (pframes_t);
112 int internal_playback_seek (framecnt_t distance);
113 int can_internal_playback_seek (framecnt_t distance);
114 std::list<boost::shared_ptr<Source> > steal_write_sources();
115 void reset_write_sources (bool, bool force = false);
116 void non_realtime_input_change ();
117 void non_realtime_locate (framepos_t location);
119 static void set_readahead_frames (framecnt_t frames_ahead) { midi_readahead = frames_ahead; }
122 int seek (framepos_t which_sample, bool complete_refill = false);
125 friend class MidiTrack;
127 int process (BufferSet&, framepos_t transport_frame, pframes_t nframes, framecnt_t &, bool need_diskstream);
128 frameoffset_t calculate_playback_distance (pframes_t nframes);
129 bool commit (framecnt_t nframes);
130 static framecnt_t midi_readahead;
134 /* The two central butler operations */
135 int do_flush (RunContext context, bool force = false);
138 int do_refill_with_alloc();
140 int read (framepos_t& start, framecnt_t cnt, bool reversed);
142 void finish_capture ();
143 void transport_stopped_wallclock (struct tm&, time_t, bool abort);
144 void transport_looped (framepos_t transport_frame);
148 int use_new_write_source (uint32_t n=0);
150 int find_and_use_playlist (const string&);
152 void allocate_temporary_buffers ();
154 int use_pending_capture_data (XMLNode& node);
156 void get_input_sources ();
157 void set_align_style_from_io();
159 /* fixed size buffers per instance of ardour for now (non-dynamic)
162 void adjust_playback_buffering () {}
163 void adjust_capture_buffering () {}
165 bool prep_record_enable ();
166 bool prep_record_disable ();
168 MidiRingBuffer<framepos_t>* _playback_buf;
169 MidiRingBuffer<framepos_t>* _capture_buf;
170 boost::weak_ptr<MidiPort> _source_port;
171 boost::shared_ptr<SMFSource> _write_source;
173 gint _frames_written_to_ringbuffer;
174 gint _frames_read_from_ringbuffer;
175 volatile gint _frames_pending_write;
176 volatile gint _num_captured_loops;
178 /** A buffer that we use to put newly-arrived MIDI data in for
179 the GUI to read (so that it can update itself).
181 MidiBuffer _gui_feed_buffer;
182 mutable Glib::Threads::Mutex _gui_feed_buffer_mutex;
185 }; /* namespace ARDOUR */
187 #endif /* __ardour_midi_diskstream_h__ */