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>
38 #include <ardour/ardour.h>
39 #include <ardour/configuration.h>
40 #include <ardour/session.h>
41 #include <ardour/route_group.h>
42 #include <ardour/route.h>
43 #include <ardour/utils.h>
44 #include <ardour/diskstream.h>
45 #include <ardour/midi_playlist.h>
46 #include <ardour/midi_ring_buffer.h>
47 #include <ardour/midi_state_tracker.h>
60 class MidiDiskstream : public Diskstream
63 MidiDiskstream (Session &, const string& name, Diskstream::Flag f = Recordable);
64 MidiDiskstream (Session &, const XMLNode&);
67 float playback_buffer_load() const;
68 float capture_buffer_load() const;
70 void get_playback(MidiBuffer& dst, nframes_t start, nframes_t end, nframes_t offset);
72 void set_record_enabled (bool yn);
74 boost::shared_ptr<MidiPlaylist> midi_playlist () { return boost::dynamic_pointer_cast<MidiPlaylist>(_playlist); }
76 int use_playlist (boost::shared_ptr<Playlist>);
77 int use_new_playlist ();
78 int use_copy_playlist ();
81 XMLNode& get_state(void);
82 int set_state(const XMLNode& node);
84 void monitor_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 uint16_t get_channel_mask() {
93 uint16_t playback_mask = _playback_buf->get_channel_mask();
95 uint16_t capture_mask = _capture_buf->get_channel_mask();
96 assert(playback_mask == capture_mask);
101 void set_channel_mode(ChannelMode mode, uint16_t mask) {
102 _playback_buf->set_channel_mode(mode, mask);
103 _capture_buf->set_channel_mode(mode, mask);
106 ChannelMode get_channel_mode() {
107 ChannelMode playback_mode = _playback_buf->get_channel_mode();
109 ChannelMode capture_mode = _capture_buf->get_channel_mode();
110 assert(playback_mode == capture_mode);
112 return playback_mode;
116 friend class Session;
118 /* the Session is the only point of access for these
119 because they require that the Session is "inactive"
120 while they are called.
123 void set_pending_overwrite(bool);
124 int overwrite_existing_buffers ();
125 void set_block_size (nframes_t);
126 int internal_playback_seek (nframes_t distance);
127 int can_internal_playback_seek (nframes_t distance);
128 int rename_write_sources ();
129 void reset_write_sources (bool, bool force = false);
130 void non_realtime_input_change ();
131 void non_realtime_locate (nframes_t location);
133 static void set_readahed_frames( nframes_t frames_ahead ) { midi_readahead = frames_ahead; }
136 int seek (nframes_t which_sample, bool complete_refill = false);
139 friend class MidiTrack;
141 int process (nframes_t transport_frame, nframes_t nframes, nframes_t offset, bool can_record, bool rec_monitors_input);
142 bool commit (nframes_t nframes);
143 static nframes_t midi_readahead;
147 /* The two central butler operations */
148 int do_flush (Session::RunContext context, bool force = false);
151 int do_refill_with_alloc();
153 int read (nframes_t& start, nframes_t cnt, bool reversed);
155 void finish_capture (bool rec_monitors_input);
156 void transport_stopped (struct tm&, time_t, bool abort);
157 void transport_looped (nframes_t transport_frame);
159 void init (Diskstream::Flag);
161 int use_new_write_source (uint32_t n=0);
163 int find_and_use_playlist (const string&);
165 void allocate_temporary_buffers ();
167 int use_pending_capture_data (XMLNode& node);
169 void get_input_sources ();
170 void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record);
171 void set_align_style_from_io();
173 void engage_record_enable ();
174 void disengage_record_enable ();
175 void check_note_onoffs(Evoral::MIDIEvent &event);
176 void emit_pending_note_offs(MidiBuffer &dst, nframes_t time);
178 MidiRingBuffer* _playback_buf;
179 MidiRingBuffer* _capture_buf;
180 MidiPort* _source_port;
181 boost::shared_ptr<SMFSource> _write_source;
182 nframes_t _last_flush_frame;
184 MidiStateTracker _midistate_tracker;
185 volatile gint _frames_written_to_ringbuffer;
186 volatile gint _frames_read_from_ringbuffer;
189 }; /* namespace ARDOUR */
191 #endif /* __ardour_midi_diskstream_h__ */