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Copyright (C) 2000 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#ifndef __ardour_io_h__
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#define __ardour_io_h__
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#include <jack/jack.h>
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#include <glibmm/threads.h>
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#include "pbd/fastlog.h"
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#include "pbd/statefuldestructible.h"
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#include "pbd/controllable.h"
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#include "ardour/ardour.h"
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#include "ardour/automation_control.h"
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#include "ardour/bundle.h"
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#include "ardour/chan_count.h"
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#include "ardour/data_type.h"
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#include "ardour/latent.h"
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#include "ardour/port_set.h"
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#include "ardour/session_object.h"
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#include "ardour/types.h"
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#include "ardour/utils.h"
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#include "ardour/buffer_set.h"
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/** A collection of ports (all input or all output) with connections.
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* An IO can contain ports of varying types, making routes/inserts/etc with
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* varied combinations of types (eg MIDI and audio) possible.
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class IO : public SessionObject, public Latent
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static const std::string state_node_name;
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IO (Session&, const std::string& name, Direction, DataType default_type = DataType::AUDIO, bool sendish = false);
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IO (Session&, const XMLNode&, DataType default_type = DataType::AUDIO, bool sendish = false);
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Direction direction() const { return _direction; }
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DataType default_type() const { return _default_type; }
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void set_default_type(DataType t) { _default_type = t; }
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bool active() const { return _active; }
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void set_active(bool yn) { _active = yn; }
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bool set_name (const std::string& str);
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virtual void silence (framecnt_t);
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void increment_port_buffer_offset (pframes_t offset);
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int ensure_io (ChanCount cnt, bool clear, void *src);
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int connect_ports_to_bundle (boost::shared_ptr<Bundle>, bool exclusive, void *);
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int disconnect_ports_from_bundle (boost::shared_ptr<Bundle>, void *);
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BundleList bundles_connected ();
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boost::shared_ptr<Bundle> bundle () { return _bundle; }
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int add_port (std::string connection, void *src, DataType type = DataType::NIL);
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int remove_port (boost::shared_ptr<Port>, void *src);
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int connect (boost::shared_ptr<Port> our_port, std::string other_port, void *src);
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int disconnect (boost::shared_ptr<Port> our_port, std::string other_port, void *src);
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int disconnect (void *src);
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bool connected_to (boost::shared_ptr<const IO>) const;
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bool connected_to (const std::string&) const;
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bool connected () const;
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bool physically_connected () const;
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framecnt_t signal_latency () const { return 0; }
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framecnt_t latency () const;
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PortSet& ports() { return _ports; }
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const PortSet& ports() const { return _ports; }
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bool has_port (boost::shared_ptr<Port>) const;
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boost::shared_ptr<Port> nth (uint32_t n) const {
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if (n < _ports.num_ports()) {
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return _ports.port(n);
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return boost::shared_ptr<Port> ();
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boost::shared_ptr<Port> port_by_name (const std::string& str) const;
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boost::shared_ptr<AudioPort> audio(uint32_t n) const;
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boost::shared_ptr<MidiPort> midi(uint32_t n) const;
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const ChanCount& n_ports () const { return _ports.count(); }
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/* The process lock will be held on emission of this signal if
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* IOChange contains ConfigurationChanged. In other cases,
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* the process lock status is undefined.
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PBD::Signal2<void, IOChange, void *> changed;
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virtual XMLNode& state (bool full);
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XMLNode& get_state (void);
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int set_state (const XMLNode&, int version);
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int set_state_2X (const XMLNode&, int, bool);
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static void prepare_for_reset (XMLNode&, const std::string&);
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typedef bool result_type;
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template <typename Iter>
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result_type operator() (Iter first, Iter last) const {
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while (first != last) {
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/** Emitted when the port count is about to change. Objects
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* can attach to this, and return `true' if they want to prevent
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* the change from happening.
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PBD::Signal1<bool, ChanCount, BoolCombiner> PortCountChanging;
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static int disable_connecting ();
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static int enable_connecting ();
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static PBD::Signal1<void, ChanCount> PortCountChanged; // emitted when the number of ports changes
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static std::string name_from_state (const XMLNode&);
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static void set_name_in_state (XMLNode&, const std::string&);
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/* we have to defer/order port connection. this is how we do it.
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static PBD::Signal0<int> ConnectingLegal;
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static bool connecting_legal;
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XMLNode *pending_state_node;
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int pending_state_node_version;
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bool pending_state_node_in;
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/* three utility functions - this just seems to be simplest place to put them */
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void collect_input (BufferSet& bufs, pframes_t nframes, ChanCount offset);
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void process_input (boost::shared_ptr<Processor>, framepos_t start_frame, framepos_t end_frame, pframes_t nframes);
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void copy_to_outputs (BufferSet& bufs, DataType type, pframes_t nframes, framecnt_t offset);
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/* AudioTrack::deprecated_use_diskstream_connections() needs these */
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int set_ports (const std::string& str);
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mutable Glib::Threads::Mutex io_lock;
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Direction _direction;
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DataType _default_type;
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int connecting_became_legal ();
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PBD::ScopedConnection connection_legal_c;
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boost::shared_ptr<Bundle> _bundle; ///< a bundle representing our ports
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struct UserBundleInfo {
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UserBundleInfo (IO*, boost::shared_ptr<UserBundle> b);
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boost::shared_ptr<UserBundle> bundle;
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PBD::ScopedConnection changed;
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std::vector<UserBundleInfo*> _bundles_connected; ///< user bundles connected to our ports
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static int parse_io_string (const std::string&, std::vector<std::string>& chns);
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static int parse_gain_string (const std::string&, std::vector<std::string>& chns);
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int ensure_ports (ChanCount, bool clear, void *src);
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void check_bundles_connected ();
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void bundle_changed (Bundle::Change);
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int get_port_counts (const XMLNode& node, int version, ChanCount& n, boost::shared_ptr<Bundle>& c);
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int get_port_counts_2X (const XMLNode& node, int version, ChanCount& n, boost::shared_ptr<Bundle>& c);
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int create_ports (const XMLNode&, int version);
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int make_connections (const XMLNode&, int, bool);
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int make_connections_2X (const XMLNode &, int, bool);
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boost::shared_ptr<Bundle> find_possible_bundle (const std::string &desired_name);
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int ensure_ports_locked (ChanCount, bool clear, bool& changed);
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std::string build_legal_port_name (DataType type);
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int32_t find_port_hole (const char* base);
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void setup_bundle ();
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std::string bundle_channel_name (uint32_t, uint32_t, DataType) const;
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void disconnect_check (boost::shared_ptr<ARDOUR::Port>, boost::shared_ptr<ARDOUR::Port>);
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} // namespace ARDOUR
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#endif /*__ardour_io_h__ */