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Diffstat (limited to 'libs/backends/jack/jack_audiobackend.h')
-rw-r--r-- | libs/backends/jack/jack_audiobackend.h | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/libs/backends/jack/jack_audiobackend.h b/libs/backends/jack/jack_audiobackend.h new file mode 100644 index 0000000000..655c939c51 --- /dev/null +++ b/libs/backends/jack/jack_audiobackend.h @@ -0,0 +1,264 @@ +/* + Copyright (C) 2013 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. + +*/ + +#ifndef __libardour_jack_audiobackend_h__ +#define __libardour_jack_audiobackend_h__ + +#include <string> +#include <vector> +#include <map> +#include <set> + +#include <stdint.h> + +#include <boost/shared_ptr.hpp> + +#include <jack/jack.h> +#ifdef HAVE_JACK_SESSION +#include <jack/session.h> +#endif + +#include "ardour/audio_backend.h" + +namespace ARDOUR { + +class JackConnection; + +class JACKAudioBackend : public AudioBackend { + public: + JACKAudioBackend (AudioEngine& e, boost::shared_ptr<JackConnection>); + ~JACKAudioBackend (); + + /* AUDIOBACKEND API */ + + std::string name() const; + void* private_handle() const; + bool available() const; + bool is_realtime () const; + + bool requires_driver_selection() const; + std::vector<std::string> enumerate_drivers () const; + int set_driver (const std::string&); + + std::vector<DeviceStatus> enumerate_devices () const; + + std::vector<float> available_sample_rates (const std::string& device) const; + std::vector<uint32_t> available_buffer_sizes (const std::string& device) const; + uint32_t available_input_channel_count (const std::string& device) const; + uint32_t available_output_channel_count (const std::string& device) const; + + bool can_change_sample_rate_when_running() const; + bool can_change_buffer_size_when_running() 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); + + std::string device_name () const; + float sample_rate () const; + uint32_t buffer_size () const; + SampleFormat sample_format () const; + bool interleaved () const; + uint32_t input_channels () const; + uint32_t output_channels () const; + uint32_t systemic_input_latency () const; + uint32_t systemic_output_latency () const; + + std::string control_app_name () const; + void launch_control_app (); + + int start (); + int stop (); + int pause (); + int freewheel (bool); + + float cpu_load() const; + + pframes_t sample_time (); + pframes_t sample_time_at_cycle_start (); + pframes_t samples_since_cycle_start (); + + size_t raw_buffer_size (DataType t); + + int create_process_thread (boost::function<void()> func, AudioBackendNativeThread*, size_t stacksize); + int wait_for_process_thread_exit (AudioBackendNativeThread); + + void transport_start (); + void transport_stop (); + void transport_locate (framepos_t /*pos*/); + TransportState transport_state () const; + framepos_t transport_frame() const; + + int set_time_master (bool /*yn*/); + bool get_sync_offset (pframes_t& /*offset*/) const; + + void update_latencies (); + + static bool already_configured(); + + /* PORTENGINE API */ + + const std::string& my_name() const; + uint32_t port_name_size() const; + + int set_port_name (PortHandle, const std::string&); + std::string get_port_name (PortHandle) const; + PortHandle* get_port_by_name (const std::string&) const; + + int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const; + + DataType port_data_type (PortHandle) const; + + PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags); + void unregister_port (PortHandle); + + bool connected (PortHandle, bool process_callback_safe); + bool connected_to (PortHandle, const std::string&, bool process_callback_safe); + bool physically_connected (PortHandle, bool process_callback_safe); + int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe); + int connect (PortHandle, const std::string&); + + int disconnect (PortHandle, const std::string&); + int disconnect_all (PortHandle); + int connect (const std::string& src, const std::string& dst); + int disconnect (const std::string& src, const std::string& dst); + + /* MIDI */ + + int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t** buf, void* port_buffer, uint32_t event_index); + int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size); + uint32_t get_midi_event_count (void* port_buffer); + void midi_clear (void* port_buffer); + + /* Monitoring */ + + bool can_monitor_input() const; + int request_input_monitoring (PortHandle, bool); + int ensure_input_monitoring (PortHandle, bool); + bool monitoring_input (PortHandle); + + /* Latency management + */ + + void set_latency_range (PortHandle, bool for_playback, LatencyRange); + LatencyRange get_latency_range (PortHandle, bool for_playback); + + /* Physical ports */ + + bool port_is_physical (PortHandle) const; + void get_physical_outputs (DataType type, std::vector<std::string>&); + void get_physical_inputs (DataType type, std::vector<std::string>&); + ChanCount n_physical_outputs () const; + ChanCount n_physical_inputs () const; + + /* Getting access to the data buffer for a port */ + + void* get_buffer (PortHandle, pframes_t); + + private: + boost::shared_ptr<JackConnection> _jack_connection; + bool _running; + bool _freewheeling; + std::map<DataType,size_t> _raw_buffer_sizes; + + static int _xrun_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 _latency_callback (jack_latency_callback_mode_t, void*); +#ifdef HAVE_JACK_SESSION + static void _session_callback (jack_session_event_t *event, void *arg); +#endif + + 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); + int process_callback (pframes_t nframes); + void jack_latency_callback (jack_latency_callback_mode_t); + void disconnected (const char*); + + void set_jack_callbacks (); + int reconnect_to_jack (); + + struct ThreadData { + JACKAudioBackend* engine; + boost::function<void()> f; + size_t stacksize; + + ThreadData (JACKAudioBackend* e, boost::function<void()> fp, size_t stacksz) + : engine (e) , f (fp) , stacksize (stacksz) {} + }; + + void* process_thread (); + static void* _start_process_thread (void*); + + void setup_jack_startup_command (); + + /* pffooo */ + + std::string _target_driver; + std::string _target_device; + float _target_sample_rate; + uint32_t _target_buffer_size; + SampleFormat _target_sample_format; + bool _target_interleaved; + uint32_t _target_input_channels; + uint32_t _target_output_channels; + uint32_t _target_systemic_input_latency; + uint32_t _target_systemic_output_latency; + uint32_t _current_sample_rate; + uint32_t _current_buffer_size; + + typedef std::set<std::string> DeviceList; + typedef std::map<std::string,DeviceList> DriverDeviceMap; + + mutable DriverDeviceMap all_devices; + + PBD::ScopedConnection disconnect_connection; + + /* PORTENGINE RELATED */ + + static int _graph_order_callback (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 connect_callback (jack_port_id_t, jack_port_id_t, int); + + ChanCount n_physical (unsigned long flags) const; + void get_physical (DataType type, unsigned long flags, std::vector<std::string>& phy) const; + + void when_connected_to_jack (); + PBD::ScopedConnection jack_connection_connection; +}; + +} // namespace + +#endif /* __ardour_audiobackend_h__ */ + |