1 /*
2  * Copyright (C) 2021 Robin Gareus <robin@gareus.org>
3  *
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.
8  *
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.
13  *
14  * You should have received a copy of the GNU General Public License along
15  * with this program; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17  */
18 
19 #ifndef _ardour_monitor_port_h_
20 #define _ardour_monitor_port_h_
21 
22 #include <boost/shared_ptr.hpp>
23 #include <set>
24 
25 #include "zita-resampler/vmresampler.h"
26 
27 #include "pbd/rcu.h"
28 
29 #include "ardour/audio_buffer.h"
30 #include "ardour/port_engine.h"
31 
32 namespace ARDOUR {
33 
34 class LIBARDOUR_API MonitorPort : public boost::noncopyable
35 {
36 public:
37 	~MonitorPort ();
38 
39 	void set_buffer_size (pframes_t);
40 	bool silent () const;
41 	AudioBuffer& get_audio_buffer (pframes_t);
42 
43 	void add_port (std::string const&);
44 	void remove_port (std::string const&, bool instantly = false);
45 	bool monitoring (std::string const& = "") const;
46 	void active_monitors (std::list <std::string>&) const;
47 	void set_active_monitors (std::list <std::string> const&);
48 	void clear_ports (bool instantly);
49 
50 	PBD::Signal2<void, std::string, bool> MonitorInputChanged;
51 
52 protected:
53 	friend class PortManager;
54 	MonitorPort ();
55 	void monitor (PortEngine&, pframes_t);
56 
57 private:
58 	struct MonitorInfo {
MonitorInfoMonitorInfo59 		MonitorInfo ()
60 		{
61 			gain = 0;
62 			remove = false;
63 		}
64 
65 		float gain;
66 		bool  remove;
67 	};
68 
69 	void collect (boost::shared_ptr<MonitorInfo>, Sample*, pframes_t, std::string const&);
70 	void finalize (pframes_t);
71 
72 	typedef std::map<std::string, boost::shared_ptr<MonitorInfo> > MonitorPorts;
73 	SerializedRCUManager<MonitorPorts> _monitor_ports;
74 
75 	AudioBuffer*            _buffer;
76 	ArdourZita::VMResampler _src;
77 	Sample*                 _input;
78 	Sample*                 _data;
79 	pframes_t               _insize;
80 	bool                    _silent;
81 };
82 
83 }
84 
85 #endif
86