311 lines
11 KiB
C++
311 lines
11 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 "weak_libjack.h"
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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 JACKSession;
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class JACKAudioBackend : public AudioBackend {
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public:
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JACKAudioBackend (AudioEngine& e, AudioBackendInfo& info, boost::shared_ptr<JackConnection>);
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~JACKAudioBackend ();
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/* AUDIOBACKEND API */
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std::string name() const;
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void* private_handle() const;
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bool available() 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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std::vector<uint32_t> available_period_sizes (const std::string& driver) 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_peridod_size (uint32_t);
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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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int set_systemic_midi_input_latency (std::string const, uint32_t) { return 0; }
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int set_systemic_midi_output_latency (std::string const, uint32_t) { return 0; }
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int reset_device ();
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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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uint32_t period_size () 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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uint32_t systemic_midi_input_latency (std::string const) const { return 0; }
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uint32_t systemic_midi_output_latency (std::string const) const { return 0; }
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std::string driver_name() const;
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std::string control_app_name () const;
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void launch_control_app ();
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int stop ();
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int freewheel (bool);
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float dsp_load() const;
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samplepos_t sample_time ();
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samplepos_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);
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int join_process_threads ();
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bool in_process_thread ();
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uint32_t process_thread_count ();
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int client_real_time_priority ();
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void transport_start ();
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void transport_stop ();
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void transport_locate (samplepos_t /*pos*/);
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TransportState transport_state () const;
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samplepos_t transport_sample() 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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/* PORTENGINE API */
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const std::string& my_name() const;
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uint32_t port_name_size() const;
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int set_port_name (PortHandle, const std::string&);
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std::string get_port_name (PortHandle) const;
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PortHandle get_port_by_name (const std::string&) const;
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int get_port_property (PortHandle, const std::string& key, std::string& value, std::string& type) const;
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int set_port_property (PortHandle, const std::string& key, const std::string& value, const std::string& type);
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int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>&) const;
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DataType port_data_type (PortHandle) const;
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PortHandle register_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
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void unregister_port (PortHandle);
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bool connected (PortHandle, bool process_callback_safe);
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bool connected_to (PortHandle, const std::string&, bool process_callback_safe);
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bool physically_connected (PortHandle, bool process_callback_safe);
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bool externally_connected (PortHandle, bool process_callback_safe);
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int get_connections (PortHandle, std::vector<std::string>&, bool process_callback_safe);
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int connect (PortHandle, const std::string&);
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int disconnect (PortHandle, const std::string&);
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int disconnect_all (PortHandle);
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int connect (const std::string& src, const std::string& dst);
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int disconnect (const std::string& src, const std::string& dst);
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/* MIDI */
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std::vector<std::string> enumerate_midi_options () const;
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int set_midi_option (const std::string&);
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std::string midi_option () const;
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std::vector<DeviceStatus> enumerate_midi_devices () const {
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return std::vector<AudioBackend::DeviceStatus> ();
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}
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int set_midi_device_enabled (std::string const, bool) {
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return 0;
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}
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bool midi_device_enabled (std::string const) const {
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return true;
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}
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bool can_set_systemic_midi_latencies () const {
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return false;
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}
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bool can_set_period_size () const {
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return true;
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}
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int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t const** buf, void* port_buffer, uint32_t event_index);
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int midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
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uint32_t get_midi_event_count (void* port_buffer);
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void midi_clear (void* port_buffer);
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/* Monitoring */
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bool can_monitor_input() const;
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int request_input_monitoring (PortHandle, bool);
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int ensure_input_monitoring (PortHandle, bool);
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bool monitoring_input (PortHandle);
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/* Latency management
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*/
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void set_latency_range (PortHandle, bool for_playback, LatencyRange);
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LatencyRange get_latency_range (PortHandle, bool for_playback);
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/* Physical ports */
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bool port_is_physical (PortHandle) const;
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void get_physical_outputs (DataType type, std::vector<std::string>&);
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void get_physical_inputs (DataType type, std::vector<std::string>&);
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ChanCount n_physical_outputs () const;
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ChanCount n_physical_inputs () const;
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/* Getting access to the data buffer for a port */
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void* get_buffer (PortHandle, pframes_t);
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/* transport sync */
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bool speed_and_position (double& sp, samplepos_t& pos);
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private:
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boost::shared_ptr<JackConnection> _jack_connection;
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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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std::vector<jack_native_thread_t> _jack_threads;
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jack_native_thread_t _main_thread;
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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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static void _session_callback (jack_session_event_t *event, void *arg);
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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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void setup_jack_startup_command (bool for_latency_measurement);
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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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uint32_t _target_num_periods;
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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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std::string _target_midi_option;
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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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/* PORTENGINE RELATED */
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static int _graph_order_callback (void *arg);
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static void _registration_callback (jack_port_id_t, int, void *);
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static void _connect_callback (jack_port_id_t, jack_port_id_t, int, void *);
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void connect_callback (jack_port_id_t, jack_port_id_t, int);
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ChanCount n_physical (unsigned long flags) const;
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void get_physical (DataType type, unsigned long flags, std::vector<std::string>& phy) const;
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void when_connected_to_jack ();
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PBD::ScopedConnection jack_connection_connection;
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/* Object to manage interactions with Session in a way that
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keeps JACK out of libardour directly
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*/
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JACKSession* _session;
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protected:
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int _start (bool for_latency_measurement);
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};
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} // namespace
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#endif /* __ardour_audiobackend_h__ */
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