192 lines
6.0 KiB
C++
192 lines
6.0 KiB
C++
/*
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Copyright (C) 2013 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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*/
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#ifndef __libardour_jack_audiobackend_h__
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#define __libardour_jack_audiobackend_h__
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#include <string>
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#include <vector>
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#include <map>
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#include <set>
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#include <stdint.h>
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#include <boost/shared_ptr.hpp>
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#include <jack/jack.h>
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#ifdef HAVE_JACK_SESSION
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#include <jack/session.h>
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#endif
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#include "ardour/audio_backend.h"
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namespace ARDOUR {
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class JackConnection;
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class JACKAudioBackend : public AudioBackend {
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public:
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JACKAudioBackend (AudioEngine& e, boost::shared_ptr<JackConnection>);
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~JACKAudioBackend ();
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std::string name() const;
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void* private_handle() const;
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bool connected() const;
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bool is_realtime () const;
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bool requires_driver_selection() const;
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std::vector<std::string> enumerate_drivers () const;
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int set_driver (const std::string&);
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std::vector<DeviceStatus> enumerate_devices () const;
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std::vector<float> available_sample_rates (const std::string& device) const;
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std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
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uint32_t available_input_channel_count (const std::string& device) const;
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uint32_t available_output_channel_count (const std::string& device) const;
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bool can_change_sample_rate_when_running() const;
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bool can_change_buffer_size_when_running() const;
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int set_device_name (const std::string&);
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int set_sample_rate (float);
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int set_buffer_size (uint32_t);
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int set_sample_format (SampleFormat);
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int set_interleaved (bool yn);
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int set_input_channels (uint32_t);
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int set_output_channels (uint32_t);
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int set_systemic_input_latency (uint32_t);
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int set_systemic_output_latency (uint32_t);
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std::string device_name () const;
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float sample_rate () const;
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uint32_t buffer_size () const;
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SampleFormat sample_format () const;
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bool interleaved () const;
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uint32_t input_channels () const;
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uint32_t output_channels () const;
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uint32_t systemic_input_latency () const;
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uint32_t systemic_output_latency () const;
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bool have_control_app() const;
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void launch_control_app ();
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int start ();
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int stop ();
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int pause ();
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int freewheel (bool);
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float cpu_load() const;
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pframes_t sample_time ();
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pframes_t sample_time_at_cycle_start ();
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pframes_t samples_since_cycle_start ();
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size_t raw_buffer_size (DataType t);
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int create_process_thread (boost::function<void()> func, pthread_t*, size_t stacksize);
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void transport_start ();
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void transport_stop ();
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void transport_locate (framepos_t /*pos*/);
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TransportState transport_state () const;
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framepos_t transport_frame() const;
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int set_time_master (bool /*yn*/);
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bool get_sync_offset (pframes_t& /*offset*/) const;
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void update_latencies ();
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static bool already_configured();
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private:
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boost::shared_ptr<JackConnection> _jack_connection; //< shared with JACKPortEngine
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bool _running;
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bool _freewheeling;
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std::map<DataType,size_t> _raw_buffer_sizes;
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static int _xrun_callback (void *arg);
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static void* _process_thread (void *arg);
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static int _sample_rate_callback (pframes_t nframes, void *arg);
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static int _bufsize_callback (pframes_t nframes, void *arg);
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static void _jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int, void*);
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static int _jack_sync_callback (jack_transport_state_t, jack_position_t*, void *arg);
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static void _freewheel_callback (int , void *arg);
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static void _latency_callback (jack_latency_callback_mode_t, void*);
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#ifdef HAVE_JACK_SESSION
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static void _session_callback (jack_session_event_t *event, void *arg);
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#endif
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void jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int);
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int jack_sync_callback (jack_transport_state_t, jack_position_t*);
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int jack_bufsize_callback (pframes_t);
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int jack_sample_rate_callback (pframes_t);
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void freewheel_callback (int);
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int process_callback (pframes_t nframes);
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void jack_latency_callback (jack_latency_callback_mode_t);
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void disconnected (const char*);
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void set_jack_callbacks ();
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int reconnect_to_jack ();
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struct ThreadData {
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JACKAudioBackend* engine;
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boost::function<void()> f;
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size_t stacksize;
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ThreadData (JACKAudioBackend* e, boost::function<void()> fp, size_t stacksz)
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: engine (e) , f (fp) , stacksize (stacksz) {}
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};
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void* process_thread ();
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static void* _start_process_thread (void*);
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ChanCount n_physical (unsigned long) const;
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void setup_jack_startup_command ();
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/* pffooo */
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std::string _target_driver;
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std::string _target_device;
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float _target_sample_rate;
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uint32_t _target_buffer_size;
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SampleFormat _target_sample_format;
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bool _target_interleaved;
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uint32_t _target_input_channels;
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uint32_t _target_output_channels;
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uint32_t _target_systemic_input_latency;
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uint32_t _target_systemic_output_latency;
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uint32_t _current_sample_rate;
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uint32_t _current_buffer_size;
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typedef std::set<std::string> DeviceList;
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typedef std::map<std::string,DeviceList> DriverDeviceMap;
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mutable DriverDeviceMap all_devices;
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PBD::ScopedConnection disconnect_connection;
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std::string control_app_name () const;
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};
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} // namespace
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#endif /* __ardour_audiobackend_h__ */
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