/*
- Copyright (C) 2002-2004 Paul Davis
+ Copyright (C) 2002-2004 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id$
*/
#ifndef __ardour_audioengine_h__
#define __ardour_audioengine_h__
+#ifdef WAF_BUILD
+#include "libardour-config.h"
+#endif
+
+#include <iostream>
#include <list>
#include <set>
#include <cmath>
#include <exception>
#include <string>
-#include <sigc++/signal.h>
+#include <glibmm/threads.h>
+
+#include "pbd/signals.h"
+#include "pbd/stacktrace.h"
-#include <glibmm/thread.h>
+#include "midi++/mmc.h"
-#include <pbd/rcu.h>
+#include "ardour/ardour.h"
+#include "ardour/data_type.h"
+#include "ardour/session_handle.h"
+#include "ardour/types.h"
+#include "ardour/chan_count.h"
+#include "ardour/port_manager.h"
-#include <ardour/ardour.h>
-#include <jack/jack.h>
-#include <jack/transport.h>
-#include <ardour/types.h>
-#include <ardour/data_type.h>
+#ifdef HAVE_JACK_SESSION
+#include <jack/session.h>
+#endif
namespace ARDOUR {
-class Session;
+class InternalPort;
+class MidiPort;
class Port;
+class Session;
+class ProcessThread;
+class AudioBackend;
+class AudioBackendInfo;
-class AudioEngine : public sigc::trackable
+class AudioEngine : public SessionHandlePtr, public PortManager
{
- public:
- AudioEngine (std::string client_name);
- virtual ~AudioEngine ();
-
- jack_client_t* jack() const { return _jack; }
- bool connected() const { return _jack != 0; }
-
- std::string client_name() const { return jack_client_name; }
-
- int reconnect_to_jack ();
- int disconnect_from_jack();
-
- bool will_reconnect_at_halt ();
- void set_reconnect_at_halt (bool);
-
- int stop ();
- int start ();
- bool running() const { return _running; }
-
- Glib::Mutex& process_lock() { return _process_lock; }
-
- nframes_t frame_rate();
- nframes_t frames_per_cycle();
-
- int usecs_per_cycle () const { return _usecs_per_cycle; }
-
- bool get_sync_offset (nframes_t& offset) const;
-
- nframes_t frames_since_cycle_start () {
- if (!_running || !_jack) return 0;
- return jack_frames_since_cycle_start (_jack);
- }
- nframes_t frame_time () {
- if (!_running || !_jack) return 0;
- return jack_frame_time (_jack);
- }
-
- nframes_t transport_frame () const {
- if (!_running || !_jack) return 0;
- return jack_get_current_transport_frame (_jack);
- }
-
- int request_buffer_size (nframes_t);
-
- nframes_t set_monitor_check_interval (nframes_t);
-
- float get_cpu_load() {
- if (!_running || !_jack) return 0;
- return jack_cpu_load (_jack);
- }
-
- void set_session (Session *);
- void remove_session ();
-
- class PortRegistrationFailure : public std::exception {
- public:
- virtual const char *what() const throw() { return "failed port registration"; }
- };
-
- class NoBackendAvailable : public std::exception {
- public:
- virtual const char *what() const throw() { return "could not connect to engine backend"; }
- };
-
- Port *register_input_port (DataType type, const std::string& portname);
- Port *register_output_port (DataType type, const std::string& portname);
- int unregister_port (Port *);
-
- int connect (const std::string& source, const std::string& destination);
- int disconnect (const std::string& source, const std::string& destination);
- int disconnect (Port *);
-
- const char ** get_ports (const std::string& port_name_pattern, const std::string& type_name_pattern, uint32_t flags);
-
- uint32_t n_physical_outputs () const;
- uint32_t n_physical_inputs () const;
-
- void get_physical_outputs (std::vector<std::string>&);
- void get_physical_inputs (std::vector<std::string>&);
-
- std::string get_nth_physical_output (uint32_t n) {
- return get_nth_physical (n, JackPortIsInput);
- }
-
- std::string get_nth_physical_input (uint32_t n) {
- return get_nth_physical (n, JackPortIsOutput);
- }
-
- nframes_t get_port_total_latency (const Port&);
- void update_total_latencies ();
-
- /* the caller may not delete the object pointed to by
- the return value
- */
-
- Port *get_port_by_name (const std::string& name, bool keep = true);
-
- enum TransportState {
- TransportStopped = JackTransportStopped,
- TransportRolling = JackTransportRolling,
- TransportLooping = JackTransportLooping,
- TransportStarting = JackTransportStarting
- };
-
- void transport_start ();
- void transport_stop ();
- void transport_locate (nframes_t);
- TransportState transport_state ();
-
- int reset_timebase ();
-
- /* start/stop freewheeling */
-
- int freewheel (bool onoff);
- bool freewheeling() const { return _freewheeling; }
-
- /* this signal is sent for every process() cycle while freewheeling.
- the regular process() call to session->process() is not made.
- */
-
- sigc::signal<int,nframes_t> Freewheel;
-
- sigc::signal<void> Xrun;
-
- /* this signal is if JACK notifies us of a graph order event */
-
- sigc::signal<void> GraphReordered;
-
- /* this signal is emitted if the sample rate changes */
-
- sigc::signal<void,nframes_t> SampleRateChanged;
-
- /* this signal is sent if JACK ever disconnects us */
-
- sigc::signal<void> Halted;
-
- /* these two are emitted when the engine itself is
- started and stopped
- */
-
- sigc::signal<void> Running;
- sigc::signal<void> Stopped;
-
- std::string make_port_name_relative (std::string);
- std::string make_port_name_non_relative (std::string);
+public:
+
+ static AudioEngine* create ();
+
+ virtual ~AudioEngine ();
+
+ int discover_backends();
+ std::vector<const AudioBackendInfo*> available_backends() const;
+ std::string current_backend_name () const;
+ boost::shared_ptr<AudioBackend> set_backend (const std::string&, const std::string& arg1, const std::string& arg2);
+ boost::shared_ptr<AudioBackend> current_backend() const { return _backend; }
+ bool setup_required () const;
+
+ ProcessThread* main_thread() const { return _main_thread; }
+
+ /* START BACKEND PROXY API
+ *
+ * See audio_backend.h for full documentation and semantics. These wrappers
+ * just forward to a backend implementation.
+ */
+
+ int start ();
+ int stop ();
+ int pause ();
+ int freewheel (bool start_stop);
+ float get_cpu_load() const ;
+ void transport_start ();
+ void transport_stop ();
+ TransportState transport_state ();
+ void transport_locate (framepos_t pos);
+ framepos_t transport_frame();
+ framecnt_t sample_rate () const;
+ pframes_t samples_per_cycle () const;
+ int usecs_per_cycle () const;
+ size_t raw_buffer_size (DataType t);
+ pframes_t sample_time ();
+ pframes_t sample_time_at_cycle_start ();
+ pframes_t samples_since_cycle_start ();
+ bool get_sync_offset (pframes_t& offset) const;
+ int create_process_thread (boost::function<void()> func, pthread_t*, size_t stacksize);
+ bool is_realtime() const;
+ bool connected() const;
+
+ int set_device_name (const std::string&);
+ int set_sample_rate (float);
+ int set_buffer_size (uint32_t);
+ int set_sample_format (SampleFormat);
+ int set_interleaved (bool yn);
+ int set_input_channels (uint32_t);
+ int set_output_channels (uint32_t);
+ int set_systemic_input_latency (uint32_t);
+ int set_systemic_output_latency (uint32_t);
+
+ /* END BACKEND PROXY API */
+
+ bool freewheeling() const { return _freewheeling; }
+ bool running() const { return _running; }
+
+ Glib::Threads::Mutex& process_lock() { return _process_lock; }
+
+ int request_buffer_size (pframes_t samples) {
+ return set_buffer_size (samples);
+ }
+
+ framecnt_t processed_frames() const { return _processed_frames; }
+
+ void set_session (Session *);
+ void remove_session (); // not a replacement for SessionHandle::session_going_away()
+ Session* session() const { return _session; }
+
+ class NoBackendAvailable : public std::exception {
+ public:
+ virtual const char *what() const throw() { return "could not connect to engine backend"; }
+ };
+
+ void split_cycle (pframes_t offset);
+
+ int reset_timebase ();
+
+ void update_latencies ();
+
+ /* this signal is sent for every process() cycle while freewheeling.
+ (the regular process() call to session->process() is not made)
+ */
+
+ PBD::Signal1<int, pframes_t> Freewheel;
+
+ PBD::Signal0<void> Xrun;
+
+ /* this signal is emitted if the sample rate changes */
+
+ PBD::Signal1<void, framecnt_t> SampleRateChanged;
+
+ /* this signal is sent if the backend ever disconnects us */
+
+ PBD::Signal1<void,const char*> Halted;
+
+ /* these two are emitted when the engine itself is
+ started and stopped
+ */
+
+ PBD::Signal0<void> Running;
+ PBD::Signal0<void> Stopped;
+
+ static AudioEngine* instance() { return _instance; }
+ static void destroy();
+ void died ();
+
+ /* The backend will cause these at the appropriate time(s)
+ */
+ int process_callback (pframes_t nframes);
+ int buffer_size_change (pframes_t nframes);
+ int sample_rate_change (pframes_t nframes);
+ void freewheel_callback (bool);
+ void timebase_callback (TransportState state, pframes_t nframes, framepos_t pos, int new_position);
+ int sync_callback (TransportState state, framepos_t position);
+ int port_registration_callback ();
+ void latency_callback (bool for_playback);
+ void halted_callback (const char* reason);
+
+ /* sets up the process callback thread */
+ static void thread_init_callback (void *);
+
+ MIDI::MachineControl& mmc() { return _mmc; }
private:
- ARDOUR::Session *session;
- jack_client_t *_jack;
- std::string jack_client_name;
- Glib::Mutex _process_lock;
- Glib::Mutex session_remove_lock;
- Glib::Cond session_removed;
- bool session_remove_pending;
- bool _running;
- bool _has_run;
- nframes_t _buffer_size;
- nframes_t _frame_rate;
- nframes_t monitor_check_interval;
- nframes_t last_monitor_check;
- nframes_t _processed_frames;
- bool _freewheeling;
- bool _freewheel_thread_registered;
- sigc::slot<int,nframes_t> freewheel_action;
- bool reconnect_on_halt;
- int _usecs_per_cycle;
-
- typedef std::set<Port*> Ports;
- SerializedRCUManager<Ports> ports;
-
- int process_callback (nframes_t nframes);
- void remove_all_ports ();
-
- typedef std::pair<std::string,std::string> PortConnection;
- typedef std::list<PortConnection> PortConnections;
-
- PortConnections port_connections;
- void remove_connections_for (Port*);
-
- std::string get_nth_physical (uint32_t which, int flags);
-
- static int _xrun_callback (void *arg);
- static int _graph_order_callback (void *arg);
- static int _process_callback (nframes_t nframes, void *arg);
- static int _sample_rate_callback (nframes_t nframes, void *arg);
- static int _bufsize_callback (nframes_t nframes, void *arg);
- static void _jack_timebase_callback (jack_transport_state_t, nframes_t, jack_position_t*, int, void*);
- static int _jack_sync_callback (jack_transport_state_t, jack_position_t*, void *arg);
- static void _freewheel_callback (int , void *arg);
-
- void jack_timebase_callback (jack_transport_state_t, nframes_t, jack_position_t*, int);
- int jack_sync_callback (jack_transport_state_t, jack_position_t*);
- int jack_bufsize_callback (nframes_t);
- int jack_sample_rate_callback (nframes_t);
-
- static void halted (void *);
-
- int connect_to_jack (std::string client_name);
-
- void meter_thread ();
- void start_metering_thread ();
- Glib::Thread* m_meter_thread;
- mutable gint m_meter_exit;
+ AudioEngine ();
+
+ static AudioEngine* _instance;
+
+ boost::shared_ptr<AudioBackend> _backend;
+
+ Glib::Threads::Mutex _process_lock;
+ Glib::Threads::Cond session_removed;
+ bool session_remove_pending;
+ frameoffset_t session_removal_countdown;
+ gain_t session_removal_gain;
+ gain_t session_removal_gain_step;
+ bool _running;
+ bool _freewheeling;
+ /// number of frames between each check for changes in monitor input
+ framecnt_t monitor_check_interval;
+ /// time of the last monitor check in frames
+ framecnt_t last_monitor_check;
+ /// the number of frames processed since start() was called
+ framecnt_t _processed_frames;
+ bool _pre_freewheel_mmc_enabled;
+ Glib::Threads::Thread* m_meter_thread;
+ ProcessThread* _main_thread;
+ MIDI::MachineControl _mmc;
+
+ void meter_thread ();
+ void start_metering_thread ();
+ void stop_metering_thread ();
+
+ static gint m_meter_exit;
+
+ void parameter_changed (const std::string&);
+ PBD::ScopedConnection config_connection;
+
+ typedef std::map<std::string,AudioBackendInfo*> BackendMap;
+ BackendMap _backends;
+ AudioBackendInfo* backend_discover (const std::string&);
+ void drop_backend ();
};
-
+
} // namespace ARDOUR
#endif /* __ardour_audioengine_h__ */
projects / ardour.git / blobdiff