2 Copyright (C) 2010 Paul Davis
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef __ardour_graph_h__
22 #define __ardour_graph_h__
29 #include <boost/shared_ptr.hpp>
34 #include "pbd/semutils.h"
36 #include "ardour/libardour_visibility.h"
37 #include "ardour/types.h"
38 #include "ardour/audio_backend.h"
39 #include "ardour/session_handle.h"
51 typedef boost::shared_ptr<GraphNode> node_ptr_t;
53 typedef std::list< node_ptr_t > node_list_t;
54 typedef std::set< node_ptr_t > node_set_t;
56 class LIBARDOUR_API Graph : public SessionHandleRef
59 Graph (Session & session);
62 void trigger (GraphNode * n);
63 void rechain (boost::shared_ptr<RouteList>, GraphEdges const &);
65 void dump (int chain);
74 int silent_process_routes (pframes_t nframes, framepos_t start_frame, framepos_t end_frame,
77 int process_routes (pframes_t nframes, framepos_t start_frame, framepos_t end_frame, int declick,
80 int routes_no_roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame,
81 bool non_rt_pending, int declick);
83 void process_one_route (Route * route);
85 void clear_other_chain ();
87 bool in_process_thread () const;
90 virtual void session_going_away ();
93 volatile bool _quit_threads;
95 void reset_thread_list ();
98 node_list_t _nodes_rt[2];
100 node_list_t _init_trigger_list[2];
102 std::vector<GraphNode *> _trigger_queue;
103 pthread_mutex_t _trigger_mutex;
105 PBD::ProcessSemaphore _execution_sem;
107 /** Signalled to start a run of the graph for a process callback */
108 PBD::ProcessSemaphore _callback_start_sem;
109 PBD::ProcessSemaphore _callback_done_sem;
110 PBD::ProcessSemaphore _cleanup_sem;
112 /** The number of processing threads that are asleep */
113 volatile gint _execution_tokens;
114 /** The number of unprocessed nodes that do not feed any other node; updated during processing */
115 volatile gint _finished_refcount;
116 /** The initial number of nodes that do not feed any other node (for each chain) */
117 volatile gint _init_finished_refcount[2];
122 Glib::Threads::Mutex _swap_mutex;
123 Glib::Threads::Cond _cleanup_cond;
124 volatile int _current_chain;
125 volatile int _pending_chain;
126 volatile int _setup_chain;
129 pframes_t _process_nframes;
130 framepos_t _process_start_frame;
131 framepos_t _process_end_frame;
132 bool _process_can_record;
133 bool _process_non_rt_pending;
134 int _process_declick;
136 bool _process_silent;
137 bool _process_noroll;
139 bool _process_need_butler;
144 #endif /* __ardour_graph_h__ */