#include <glibmm/threads.h>
-#include "pbd/rcu.h"
#include "pbd/signals.h"
#include "pbd/stacktrace.h"
-#ifndef WIN32
-#include <jack/weakjack.h>
-#endif
-
-#include <jack/jack.h>
-#include <jack/transport.h>
-#include <jack/thread.h>
-
#include "ardour/ardour.h"
-
#include "ardour/data_type.h"
#include "ardour/session_handle.h"
+#include "ardour/libardour_visibility.h"
#include "ardour/types.h"
#include "ardour/chan_count.h"
+#include "ardour/port_manager.h"
#ifdef HAVE_JACK_SESSION
#include <jack/session.h>
#endif
+class MTDM;
+
namespace ARDOUR {
class InternalPort;
class Port;
class Session;
class ProcessThread;
+class AudioBackend;
+class AudioBackendInfo;
-class AudioEngine : public SessionHandlePtr
+class LIBARDOUR_API AudioEngine : public SessionHandlePtr, public PortManager
{
public:
- typedef std::map<std::string,boost::shared_ptr<Port> > Ports;
-
- AudioEngine (std::string client_name, std::string session_uuid);
- virtual ~AudioEngine ();
-
- jack_client_t* jack() const;
- bool connected() const { return _jack != 0; }
-
- bool is_realtime () const;
-
- ProcessThread* main_thread() const { return _main_thread; }
-
- std::string client_name() const { return jack_client_name; }
-
- int reconnect_to_jack ();
- int disconnect_from_jack();
-
- int stop (bool forever = false);
- int start ();
- bool running() const { return _running; }
-
- Glib::Threads::Mutex& process_lock() { return _process_lock; }
-
- framecnt_t frame_rate () const;
- pframes_t frames_per_cycle () const;
-
- size_t raw_buffer_size(DataType t);
-
- int usecs_per_cycle () const { return _usecs_per_cycle; }
-
- bool get_sync_offset (pframes_t & offset) const;
-
- pframes_t frames_since_cycle_start () {
- jack_client_t* _priv_jack = _jack;
- if (!_running || !_priv_jack) {
- return 0;
- }
- return jack_frames_since_cycle_start (_priv_jack);
- }
-
- pframes_t frame_time () {
- jack_client_t* _priv_jack = _jack;
- if (!_running || !_priv_jack) {
- return 0;
- }
- return jack_frame_time (_priv_jack);
- }
-
- pframes_t frame_time_at_cycle_start () {
- jack_client_t* _priv_jack = _jack;
- if (!_running || !_priv_jack) {
- return 0;
- }
- return jack_last_frame_time (_priv_jack);
- }
-
- pframes_t transport_frame () const {
- const jack_client_t* _priv_jack = _jack;
- if (!_running || !_priv_jack) {
- return 0;
- }
- return jack_get_current_transport_frame (_priv_jack);
- }
-
- int request_buffer_size (pframes_t);
-
- framecnt_t processed_frames() const { return _processed_frames; }
-
- float get_cpu_load() {
- jack_client_t* _priv_jack = _jack;
- if (!_running || !_priv_jack) {
- return 0;
- }
- return jack_cpu_load (_priv_jack);
- }
-
- void set_session (Session *);
- void remove_session (); // not a replacement for SessionHandle::session_going_away()
-
- class PortRegistrationFailure : public std::exception {
- public:
- PortRegistrationFailure (std::string const & why = "")
- : reason (why) {}
-
- ~PortRegistrationFailure () throw () {}
-
- virtual const char *what() const throw () { return reason.c_str(); }
-
- private:
- std::string reason;
- };
-
- class NoBackendAvailable : public std::exception {
- public:
- virtual const char *what() const throw() { return "could not connect to engine backend"; }
- };
-
- boost::shared_ptr<Port> register_input_port (DataType, const std::string& portname);
- boost::shared_ptr<Port> register_output_port (DataType, const std::string& portname);
- int unregister_port (boost::shared_ptr<Port>);
-
- bool port_is_physical (const std::string&) const;
- void request_jack_monitors_input (const std::string&, bool) const;
-
- void split_cycle (pframes_t offset);
-
- int connect (const std::string& source, const std::string& destination);
- int disconnect (const std::string& source, const std::string& destination);
- int disconnect (boost::shared_ptr<Port>);
-
- const char ** get_ports (const std::string& port_name_pattern, const std::string& type_name_pattern, uint32_t flags);
-
- bool can_request_hardware_monitoring ();
-
- ChanCount n_physical_outputs () const;
- ChanCount n_physical_inputs () const;
-
- void get_physical_outputs (DataType type, std::vector<std::string>&);
- void get_physical_inputs (DataType type, std::vector<std::string>&);
- boost::shared_ptr<Port> get_port_by_name (const std::string &);
- void port_renamed (const std::string&, const std::string&);
-
- enum TransportState {
- TransportStopped = JackTransportStopped,
- TransportRolling = JackTransportRolling,
- TransportLooping = JackTransportLooping,
- TransportStarting = JackTransportStarting
- };
-
- void transport_start ();
- void transport_stop ();
- void transport_locate (framepos_t);
- TransportState transport_state ();
-
- int reset_timebase ();
-
- void update_latencies ();
-
- /* 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.
- */
-
- PBD::Signal1<int, pframes_t> Freewheel;
-
- PBD::Signal0<void> Xrun;
-
- /* this signal is if JACK notifies us of a graph order event */
-
- PBD::Signal0<void> GraphReordered;
-
-#ifdef HAVE_JACK_SESSION
- PBD::Signal1<void,jack_session_event_t *> JackSessionEvent;
-#endif
-
-
- /* this signal is emitted if the sample rate changes */
-
- PBD::Signal1<void, framecnt_t> SampleRateChanged;
-
- /* this signal is sent if JACK 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;
-
- /** Emitted if a JACK port is registered or unregistered */
- PBD::Signal0<void> PortRegisteredOrUnregistered;
-
- /** Emitted if a JACK port is connected or disconnected.
- * The Port parameters are the ports being connected / disconnected, or 0 if they are not known to Ardour.
- * The std::string parameters are the (long) port names.
- * The bool parameter is true if ports were connected, or false for disconnected.
- */
- PBD::Signal5<void, boost::weak_ptr<Port>, std::string, boost::weak_ptr<Port>, std::string, bool> PortConnectedOrDisconnected;
-
- std::string make_port_name_relative (std::string) const;
- std::string make_port_name_non_relative (std::string) const;
- bool port_is_mine (const std::string&) const;
-
- static AudioEngine* instance() { return _instance; }
- static void destroy();
- void died ();
-
- int create_process_thread (boost::function<void()>, jack_native_thread_t*, size_t stacksize);
- bool stop_process_thread (jack_native_thread_t);
-
-private:
- static AudioEngine* _instance;
-
- jack_client_t* volatile _jack; /* could be reset to null by SIGPIPE or another thread */
- std::string jack_client_name;
- 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 _has_run;
- mutable framecnt_t _buffer_size;
- std::map<DataType,size_t> _raw_buffer_sizes;
- mutable framecnt_t _frame_rate;
- /// 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 _freewheeling;
- bool _pre_freewheel_mmc_enabled;
- int _usecs_per_cycle;
- bool port_remove_in_progress;
- Glib::Threads::Thread* m_meter_thread;
- ProcessThread* _main_thread;
-
- SerializedRCUManager<Ports> ports;
-
- boost::shared_ptr<Port> register_port (DataType type, const std::string& portname, bool input);
-
- int process_callback (pframes_t nframes);
- void* process_thread ();
- void remove_all_ports ();
-
- ChanCount n_physical (unsigned long) const;
- void get_physical (DataType, unsigned long, std::vector<std::string> &);
-
- void port_registration_failure (const std::string& portname);
-
- static int _xrun_callback (void *arg);
-#ifdef HAVE_JACK_SESSION
- static void _session_callback (jack_session_event_t *event, void *arg);
-#endif
- static int _graph_order_callback (void *arg);
- static void* _process_thread (void *arg);
- static int _sample_rate_callback (pframes_t nframes, void *arg);
- static int _bufsize_callback (pframes_t nframes, void *arg);
- static void _jack_timebase_callback (jack_transport_state_t, pframes_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);
- static void _registration_callback (jack_port_id_t, int, void *);
- static void _connect_callback (jack_port_id_t, jack_port_id_t, int, void *);
-
- void jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int);
- int jack_sync_callback (jack_transport_state_t, jack_position_t*);
- int jack_bufsize_callback (pframes_t);
- int jack_sample_rate_callback (pframes_t);
- void freewheel_callback (int);
- void connect_callback (jack_port_id_t, jack_port_id_t, int);
-
- void set_jack_callbacks ();
-
- static void _latency_callback (jack_latency_callback_mode_t, void*);
- void jack_latency_callback (jack_latency_callback_mode_t);
-
- int connect_to_jack (std::string client_name, std::string session_uuid);
-
- static void halted (void *);
- static void halted_info (jack_status_t,const char*,void *);
-
- void meter_thread ();
- void start_metering_thread ();
- void stop_metering_thread ();
-
- static gint m_meter_exit;
-
- struct ThreadData {
- AudioEngine* engine;
- boost::function<void()> f;
- size_t stacksize;
-
- ThreadData (AudioEngine* ae, boost::function<void()> fp, size_t stacksz)
- : engine (ae) , f (fp) , stacksize (stacksz) {}
- };
-
- static void* _start_process_thread (void*);
- void parameter_changed (const std::string&);
- PBD::ScopedConnection config_connection;
+ 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_default_backend ();
+ 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 (bool for_latency_measurement=false);
+ int stop (bool for_latency_measurement=false);
+ int freewheel (bool start_stop);
+ float get_dsp_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);
+ int join_process_threads ();
+ bool in_process_thread ();
+ uint32_t process_thread_count ();
+
+ 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 *);
+
+ /* latency measurement */
+
+ MTDM* mtdm();
+ int prepare_for_latency_measurement ();
+ int start_latency_detection ();
+ void stop_latency_detection ();
+ void set_latency_input_port (const std::string&);
+ void set_latency_output_port (const std::string&);
+ uint32_t latency_signal_delay () const { return _latency_signal_latency; }
+
+ private:
+ AudioEngine ();
+
+ static AudioEngine* _instance;
+
+ 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;
+ Glib::Threads::Thread* m_meter_thread;
+ ProcessThread* _main_thread;
+ MTDM* _mtdm;
+ bool _measuring_latency;
+ PortEngine::PortHandle _latency_input_port;
+ PortEngine::PortHandle _latency_output_port;
+ framecnt_t _latency_flush_frames;
+ std::string _latency_input_name;
+ std::string _latency_output_name;
+ framecnt_t _latency_signal_latency;
+ bool _stopped_for_latency;
+ bool _started_for_latency;
+ bool _in_destructor;
+
+ void meter_thread ();
+ void start_metering_thread ();
+ void stop_metering_thread ();
+
+ static gint m_meter_exit;
+
+ typedef std::map<std::string,AudioBackendInfo*> BackendMap;
+ BackendMap _backends;
+ AudioBackendInfo* backend_discover (const std::string&);
+ void drop_backend ();
};
-
+
} // namespace ARDOUR
#endif /* __ardour_audioengine_h__ */
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