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__
24 #include <sigc++/signal.h>
35 #include <pbd/fastlog.h>
36 #include <pbd/ringbufferNPT.h>
39 #include <ardour/ardour.h>
40 #include <ardour/configuration.h>
41 #include <ardour/session.h>
42 #include <ardour/route_group.h>
43 #include <ardour/route.h>
44 #include <ardour/port.h>
45 #include <ardour/utils.h>
46 #include <ardour/diskstream.h>
47 #include <ardour/midi_playlist.h>
48 #include <ardour/midi_ring_buffer.h>
49 #include <ardour/midi_state_tracker.h>
62 class MidiDiskstream : public Diskstream
65 MidiDiskstream (Session &, const string& name, Diskstream::Flag f = Recordable);
66 MidiDiskstream (Session &, const XMLNode&);
69 float playback_buffer_load() const;
70 float capture_buffer_load() const;
72 void get_playback(MidiBuffer& dst, nframes_t start, nframes_t end, nframes_t offset);
74 void set_record_enabled (bool yn);
76 boost::shared_ptr<MidiPlaylist> midi_playlist () { return boost::dynamic_pointer_cast<MidiPlaylist>(_playlist); }
78 int use_playlist (boost::shared_ptr<Playlist>);
79 int use_new_playlist ();
80 int use_copy_playlist ();
83 XMLNode& get_state(void);
84 int set_state(const XMLNode& node);
86 void monitor_input (bool);
88 boost::shared_ptr<SMFSource> write_source () { return _write_source; }
90 int set_destructive (bool yn); // doom!
92 void set_note_mode (NoteMode m);
94 uint16_t get_channel_mask() {
95 uint16_t playback_mask = _playback_buf->get_channel_mask();
97 uint16_t capture_mask = _capture_buf->get_channel_mask();
98 assert(playback_mask == capture_mask);
100 return playback_mask;
103 void set_channel_mode(ChannelMode mode, uint16_t mask) {
104 _playback_buf->set_channel_mode(mode, mask);
105 _capture_buf->set_channel_mode(mode, mask);
108 ChannelMode get_channel_mode() {
109 ChannelMode playback_mode = _playback_buf->get_channel_mode();
111 ChannelMode capture_mode = _capture_buf->get_channel_mode();
112 assert(playback_mode == capture_mode);
114 return playback_mode;
118 friend class Session;
120 /* the Session is the only point of access for these
121 because they require that the Session is "inactive"
122 while they are called.
125 void set_pending_overwrite(bool);
126 int overwrite_existing_buffers ();
127 void set_block_size (nframes_t);
128 int internal_playback_seek (nframes_t distance);
129 int can_internal_playback_seek (nframes_t distance);
130 int rename_write_sources ();
131 void reset_write_sources (bool, bool force = false);
132 void non_realtime_input_change ();
133 void non_realtime_locate (nframes_t location);
135 static void set_readahed_frames( nframes_t frames_ahead ) { midi_readahead = frames_ahead; }
138 int seek (nframes_t which_sample, bool complete_refill = false);
141 friend class MidiTrack;
143 int process (nframes_t transport_frame, nframes_t nframes, nframes_t offset, bool can_record, bool rec_monitors_input);
144 bool commit (nframes_t nframes);
145 static nframes_t midi_readahead;
149 /* The two central butler operations */
150 int do_flush (Session::RunContext context, bool force = false);
153 int do_refill_with_alloc();
155 int read (nframes_t& start, nframes_t cnt, bool reversed);
157 void finish_capture (bool rec_monitors_input);
158 void transport_stopped (struct tm&, time_t, bool abort);
159 void transport_looped (nframes_t transport_frame);
161 void init (Diskstream::Flag);
163 int use_new_write_source (uint32_t n=0);
165 int find_and_use_playlist (const string&);
167 void allocate_temporary_buffers ();
169 int use_pending_capture_data (XMLNode& node);
171 void get_input_sources ();
172 void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record);
173 void set_align_style_from_io();
175 void engage_record_enable ();
176 void disengage_record_enable ();
177 void check_note_onoffs(Evoral::MIDIEvent &event);
178 void emit_pending_note_offs(MidiBuffer &dst, nframes_t time);
180 MidiRingBuffer* _playback_buf;
181 MidiRingBuffer* _capture_buf;
182 MidiPort* _source_port;
183 boost::shared_ptr<SMFSource> _write_source;
184 nframes_t _last_flush_frame;
186 MidiStateTracker _midistate_tracker;
187 volatile gint _frames_written_to_ringbuffer;
188 volatile gint _frames_read_from_ringbuffer;
191 }; /* namespace ARDOUR */
193 #endif /* __ardour_midi_diskstream_h__ */