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Diffstat (limited to 'libs/ardour/ardour/io.h')
-rw-r--r-- | libs/ardour/ardour/io.h | 408 |
1 files changed, 408 insertions, 0 deletions
diff --git a/libs/ardour/ardour/io.h b/libs/ardour/ardour/io.h new file mode 100644 index 0000000000..c67473dcc0 --- /dev/null +++ b/libs/ardour/ardour/io.h @@ -0,0 +1,408 @@ +/* + Copyright (C) 2000 Paul Davis + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id$ +*/ + +#ifndef __ardour_io_h__ +#define __ardour_io_h__ + +#include <string> +#include <vector> +#include <cmath> +#include <sigc++/signal.h> +#include <jack/jack.h> + +#include <pbd/lockmonitor.h> +#include <pbd/fastlog.h> +#include <pbd/undo.h> +#include <pbd/atomic.h> +#include <midi++/controllable.h> + +#include <ardour/ardour.h> +#include <ardour/stateful.h> +#include <ardour/utils.h> +#include <ardour/state_manager.h> +#include <ardour/curve.h> + +using std::string; +using std::vector; + +class XMLNode; + +namespace ARDOUR { + +class Session; +class AudioEngine; +class Port; +class Connection; +class Panner; + +class IO : public Stateful, public ARDOUR::StateManager +{ + + public: + static const string state_node_name; + + IO (Session&, string name, + int input_min = -1, int input_max = -1, + int output_min = -1, int output_max = -1); + + virtual ~IO(); + + int input_minimum() const { return _input_minimum; } + int input_maximum() const { return _input_maximum; } + int output_minimum() const { return _output_minimum; } + int output_maximum() const { return _output_maximum; } + + void set_input_minimum (int n); + void set_input_maximum (int n); + void set_output_minimum (int n); + void set_output_maximum (int n); + + const string& name() const { return _name; } + virtual int set_name (string str, void *src); + + virtual void silence (jack_nframes_t, jack_nframes_t offset); + + void pan (vector<Sample*>& bufs, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset, gain_t gain_coeff); + void pan_automated (vector<Sample*>& bufs, uint32_t nbufs, jack_nframes_t start_frame, jack_nframes_t end_frame, + jack_nframes_t nframes, jack_nframes_t offset); + void collect_input (vector<Sample*>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset); + void deliver_output (vector<Sample *>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset); + void deliver_output_no_pan (vector<Sample *>&, uint32_t nbufs, jack_nframes_t nframes, jack_nframes_t offset); + void just_meter_input (jack_nframes_t start_frame, jack_nframes_t end_frame, + jack_nframes_t nframes, jack_nframes_t offset); + + virtual uint32_t n_process_buffers () { return 0; } + + virtual void set_gain (gain_t g, void *src); + void inc_gain (gain_t delta, void *src); + gain_t gain () const { return _desired_gain; } + virtual gain_t effective_gain () const; + + Panner& panner() { return *_panner; } + + int ensure_io (uint32_t, uint32_t, bool clear, void *src); + + int use_input_connection (Connection&, void *src); + int use_output_connection (Connection&, void *src); + + Connection *input_connection() const { return _input_connection; } + Connection *output_connection() const { return _output_connection; } + + int add_input_port (string source, void *src); + int add_output_port (string destination, void *src); + + int remove_input_port (Port *, void *src); + int remove_output_port (Port *, void *src); + + int set_input (Port *, void *src); + + int connect_input (Port *our_port, string other_port, void *src); + int connect_output (Port *our_port, string other_port, void *src); + + int disconnect_input (Port *our_port, string other_port, void *src); + int disconnect_output (Port *our_port, string other_port, void *src); + + int disconnect_inputs (void *src); + int disconnect_outputs (void *src); + + jack_nframes_t output_latency() const; + jack_nframes_t input_latency() const; + void set_port_latency (jack_nframes_t); + + Port *output (uint32_t n) const { + if (n < _noutputs) { + return _outputs[n]; + } else { + return 0; + } + } + + Port *input (uint32_t n) const { + if (n < _ninputs) { + return _inputs[n]; + } else { + return 0; + } + } + + uint32_t n_inputs () const { return _ninputs; } + uint32_t n_outputs () const { return _noutputs; } + + sigc::signal<void,IOChange,void*> input_changed; + sigc::signal<void,IOChange,void*> output_changed; + + sigc::signal<void,void*> gain_changed; + sigc::signal<void,void*> name_changed; + + virtual XMLNode& state (bool full); + XMLNode& get_state (void); + int set_state (const XMLNode&); + + virtual UndoAction get_memento() const; + + + static int disable_connecting (void); + + static int enable_connecting (void); + + static int disable_ports (void); + + static int enable_ports (void); + + static int disable_panners (void); + + static int reset_panners (void); + + static sigc::signal<int> PortsLegal; + static sigc::signal<int> PannersLegal; + static sigc::signal<int> ConnectingLegal; + static sigc::signal<void,uint32_t> MoreOutputs; + static sigc::signal<int> PortsCreated; + + /* MIDI control */ + + void set_midi_to_gain_function (gain_t (*function)(double val)) { + _midi_gain_control.midi_to_gain = function; + } + + void set_gain_to_midi_function (double (*function)(gain_t gain)) { + _midi_gain_control.gain_to_midi = function; + } + + MIDI::Controllable& midi_gain_control() { + return _midi_gain_control; + } + + virtual void reset_midi_control (MIDI::Port*, bool on); + + virtual void send_all_midi_feedback (); + virtual MIDI::byte* write_midi_feedback (MIDI::byte*, int32_t& bufsize); + + /* Peak metering */ + + float peak_input_power (uint32_t n) { + if (n < std::max(_ninputs, _noutputs)) { + float x = _stored_peak_power[n]; + if(x > 0.0) { + return 20 * fast_log10(x); + } else { + return minus_infinity(); + } + } else { + return minus_infinity(); + } + } + + static sigc::signal<void> GrabPeakPower; + + /* automation */ + + void clear_automation (); + + bool gain_automation_recording() const { + return (_gain_automation_curve.automation_state() & (Write|Touch)); + } + + bool gain_automation_playback() const { + return (_gain_automation_curve.automation_state() & Play) || + ((_gain_automation_curve.automation_state() & Touch) && + !_gain_automation_curve.touching()); + } + + virtual void set_gain_automation_state (AutoState); + AutoState gain_automation_state() const { return _gain_automation_curve.automation_state(); } + sigc::signal<void> gain_automation_state_changed; + + virtual void set_gain_automation_style (AutoStyle); + AutoStyle gain_automation_style () const { return _gain_automation_curve.automation_style(); } + sigc::signal<void> gain_automation_style_changed; + + static void set_automation_interval (jack_nframes_t frames) { + _automation_interval = frames; + } + + static jack_nframes_t automation_interval() { + return _automation_interval; + } + + virtual void transport_stopped (jack_nframes_t now); + virtual void automation_snapshot (jack_nframes_t now); + + ARDOUR::Curve& gain_automation_curve () { return _gain_automation_curve; } + + void start_gain_touch (); + void end_gain_touch (); + + void start_pan_touch (uint32_t which); + void end_pan_touch (uint32_t which); + + id_t id() const { return _id; } + + void defer_pan_reset (); + void allow_pan_reset (); + + /* the session calls this for master outs before + anyone else. controls outs too, at some point. + */ + + XMLNode *pending_state_node; + int ports_became_legal (); + + private: + mutable PBD::Lock io_lock; + + protected: + Session& _session; + Panner* _panner; + gain_t _gain; + gain_t _effective_gain; + gain_t _desired_gain; + PBD::NonBlockingLock declick_lock; + vector<Port*> _outputs; + vector<Port*> _inputs; + vector<float> _peak_power; + vector<float> _stored_peak_power; + string _name; + Connection* _input_connection; + Connection* _output_connection; + id_t _id; + bool no_panner_reset; + XMLNode* deferred_state; + + virtual void set_deferred_state() {} + + void reset_peak_meters(); + void reset_panner (); + + virtual uint32_t pans_required() const { return _ninputs; } + + static void apply_declick (vector<Sample*>&, uint32_t nbufs, jack_nframes_t nframes, + gain_t initial, gain_t target, bool invert_polarity); + + struct MIDIGainControl : public MIDI::Controllable { + MIDIGainControl (IO&, MIDI::Port *); + void set_value (float); + + void send_feedback (gain_t); + MIDI::byte* write_feedback (MIDI::byte* buf, int32_t& bufsize, gain_t val, bool force = false); + + IO& io; + bool setting; + MIDI::byte last_written; + + gain_t (*midi_to_gain) (double val); + double (*gain_to_midi) (gain_t gain); + }; + + MIDIGainControl _midi_gain_control; + + /* state management */ + + Change restore_state (State&); + StateManager::State* state_factory (std::string why) const; + void send_state_changed(); + + bool get_midi_node_info (XMLNode * node, MIDI::eventType & ev, MIDI::channel_t & chan, MIDI::byte & additional); + bool set_midi_node_info (XMLNode * node, MIDI::eventType ev, MIDI::channel_t chan, MIDI::byte additional); + + /* automation */ + + jack_nframes_t last_automation_snapshot; + static jack_nframes_t _automation_interval; + + AutoState _gain_automation_state; + AutoStyle _gain_automation_style; + + bool apply_gain_automation; + Curve _gain_automation_curve; + + int save_automation (const string&); + int load_automation (const string&); + + PBD::NonBlockingLock automation_lock; + + /* AudioTrack::deprecated_use_diskstream_connections() needs these */ + + int set_inputs (const string& str); + int set_outputs (const string& str); + + static bool connecting_legal; + static bool ports_legal; + + private: + + uint32_t _ninputs; + uint32_t _noutputs; + + /* are these the best variable names ever, or what? */ + + sigc::connection input_connection_configuration_connection; + sigc::connection output_connection_configuration_connection; + sigc::connection input_connection_connection_connection; + sigc::connection output_connection_connection_connection; + + static bool panners_legal; + + int connecting_became_legal (); + int panners_became_legal (); + sigc::connection connection_legal_c; + sigc::connection port_legal_c; + sigc::connection panner_legal_c; + + int _input_minimum; + int _input_maximum; + int _output_minimum; + int _output_maximum; + + + static int parse_io_string (const string&, vector<string>& chns); + + static int parse_gain_string (const string&, vector<string>& chns); + + int set_sources (vector<string>&, void *src, bool add); + int set_destinations (vector<string>&, void *src, bool add); + + int ensure_inputs (uint32_t, bool clear, bool lockit, void *src); + int ensure_outputs (uint32_t, bool clear, bool lockit, void *src); + + void drop_input_connection (); + void drop_output_connection (); + + void input_connection_configuration_changed (); + void input_connection_connection_changed (int); + void output_connection_configuration_changed (); + void output_connection_connection_changed (int); + + int create_ports (const XMLNode&); + int make_connections (const XMLNode&); + + void setup_peak_meters (); + void grab_peak_power (); + + bool ensure_inputs_locked (uint32_t, bool clear, void *src); + bool ensure_outputs_locked (uint32_t, bool clear, void *src); + + int32_t find_input_port_hole (); + int32_t find_output_port_hole (); +}; + +}; /* namespace ARDOUR */ + +#endif /*__ardour_io_h__ */ |