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/diskstream.h"
40 #include "ardour/midi_playlist.h"
41 #include "ardour/midi_ring_buffer.h"
42 #include "ardour/midi_state_tracker.h"
43 #include "ardour/utils.h"
57 class MidiDiskstream : public Diskstream
60 MidiDiskstream (Session &, const string& name, Diskstream::Flag f = Recordable);
61 MidiDiskstream (Session &, const XMLNode&);
64 float playback_buffer_load() const;
65 float capture_buffer_load() const;
67 void get_playback(MidiBuffer& dst, nframes_t start, nframes_t end);
69 void set_record_enabled (bool yn);
71 boost::shared_ptr<MidiPlaylist> midi_playlist () { return boost::dynamic_pointer_cast<MidiPlaylist>(_playlist); }
73 int use_playlist (boost::shared_ptr<Playlist>);
74 int use_new_playlist ();
75 int use_copy_playlist ();
78 XMLNode& get_state(void);
79 int set_state(const XMLNode& node);
81 void monitor_input (bool);
83 MidiRingBuffer<nframes_t>* playback_buffer () { return _playback_buf; }
84 MidiRingBuffer<nframes_t>* capture_buffer () { return _capture_buf; }
85 boost::shared_ptr<SMFSource> write_source () { return _write_source; }
87 int set_destructive (bool yn); // doom!
89 void set_note_mode (NoteMode m);
91 uint16_t get_channel_mask() {
92 uint16_t playback_mask = _playback_buf->get_channel_mask();
94 uint16_t capture_mask = _capture_buf->get_channel_mask();
95 assert(playback_mask == capture_mask);
100 void set_channel_mode(ChannelMode mode, uint16_t mask) {
101 _playback_buf->set_channel_mode(mode, mask);
102 _capture_buf->set_channel_mode(mode, mask);
105 ChannelMode get_channel_mode() {
106 ChannelMode playback_mode = _playback_buf->get_channel_mode();
108 ChannelMode capture_mode = _capture_buf->get_channel_mode();
109 assert(playback_mode == capture_mode);
111 return playback_mode;
115 friend class Session;
117 /* the Session is the only point of access for these
118 because they require that the Session is "inactive"
119 while they are called.
122 void set_pending_overwrite(bool);
123 int overwrite_existing_buffers ();
124 void set_block_size (nframes_t);
125 int internal_playback_seek (nframes_t distance);
126 int can_internal_playback_seek (nframes_t distance);
127 int rename_write_sources ();
128 void reset_write_sources (bool, bool force = false);
129 void non_realtime_input_change ();
130 void non_realtime_locate (nframes_t location);
132 static void set_readahead_frames(nframes_t frames_ahead) { midi_readahead = frames_ahead; }
135 int seek (nframes_t which_sample, bool complete_refill = false);
138 friend class MidiTrack;
140 int process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input);
141 bool commit (nframes_t nframes);
142 static nframes_t midi_readahead;
146 /* The two central butler operations */
147 int do_flush (RunContext context, bool force = false);
150 int do_refill_with_alloc();
152 int read (nframes_t& start, nframes_t cnt, bool reversed);
154 void finish_capture (bool rec_monitors_input);
155 void transport_stopped (struct tm&, time_t, bool abort);
156 void transport_looped (nframes_t transport_frame);
158 void init (Diskstream::Flag);
160 int use_new_write_source (uint32_t n=0);
162 int find_and_use_playlist (const string&);
164 void allocate_temporary_buffers ();
166 int use_pending_capture_data (XMLNode& node);
168 void get_input_sources ();
169 void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record);
170 void set_align_style_from_io();
172 void engage_record_enable ();
173 void disengage_record_enable ();
175 MidiRingBuffer<nframes_t>* _playback_buf;
176 MidiRingBuffer<nframes_t>* _capture_buf;
177 MidiPort* _source_port;
178 boost::shared_ptr<SMFSource> _write_source;
179 nframes_t _last_flush_frame;
181 MidiStateTracker _midi_state_tracker;
182 MidiStateTracker _incoming_midi_state_tracker;
183 volatile gint _frames_written_to_ringbuffer;
184 volatile gint _frames_read_from_ringbuffer;
187 }; /* namespace ARDOUR */
189 #endif /* __ardour_midi_diskstream_h__ */