2 Copyright (C) 2013 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __libardour_jack_audiobackend_h__
21 #define __libardour_jack_audiobackend_h__
28 #include <jack/jack.h>
29 #ifdef HAVE_JACK_SESSION
30 #include <jack/session.h>
33 #include "ardour/audio_backend.h"
39 class JACKAudioBackend : public AudioBackend {
41 JACKAudioBackend (AudioEngine& e);
44 std::string name() const;
45 bool connected() const;
46 bool is_realtime () const;
48 std::vector<std::string> enumerate_devices () const;
49 std::vector<float> available_sample_rates (const std::string& device) const;
50 std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
51 uint32_t available_input_channel_count (const std::string& device) const;
52 uint32_t available_output_channel_count (const std::string& device) const;
54 int set_device_name (const std::string&);
55 int set_sample_rate (float);
56 int set_buffer_size (uint32_t);
57 int set_sample_format (SampleFormat);
58 int set_interleaved (bool yn);
59 int set_input_channels (uint32_t);
60 int set_output_channels (uint32_t);
61 int set_systemic_input_latency (uint32_t);
62 int set_systemic_output_latency (uint32_t);
64 std::string get_device_name () const;
65 float get_sample_rate () const;
66 uint32_t get_buffer_size () const;
67 SampleFormat get_sample_format () const;
68 bool get_interleaved () const;
69 uint32_t get_input_channels () const;
70 uint32_t get_output_channels () const;
71 uint32_t get_systemic_input_latency () const;
72 uint32_t get_systemic_output_latency () const;
80 JackConnection* _jack_connection;
82 static int _xrun_callback (void *arg);
83 static int _graph_order_callback (void *arg);
84 static void* _process_thread (void *arg);
85 static int _sample_rate_callback (pframes_t nframes, void *arg);
86 static int _bufsize_callback (pframes_t nframes, void *arg);
87 static void _jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int, void*);
88 static int _jack_sync_callback (jack_transport_state_t, jack_position_t*, void *arg);
89 static void _freewheel_callback (int , void *arg);
90 static void _registration_callback (jack_port_id_t, int, void *);
91 static void _connect_callback (jack_port_id_t, jack_port_id_t, int, void *);
92 static void _latency_callback (jack_latency_callback_mode_t, void*);
93 #ifdef HAVE_JACK_SESSION
94 static void _session_callback (jack_session_event_t *event, void *arg);
97 void jack_timebase_callback (jack_transport_state_t, pframes_t, jack_position_t*, int);
98 int jack_sync_callback (jack_transport_state_t, jack_position_t*);
99 int jack_bufsize_callback (pframes_t);
100 int jack_sample_rate_callback (pframes_t);
101 void freewheel_callback (int);
102 void connect_callback (jack_port_id_t, jack_port_id_t, int);
103 int process_callback (pframes_t nframes);
104 void jack_latency_callback (jack_latency_callback_mode_t);
106 void set_jack_callbacks ();
107 int connect_to_jack (std::string client_name, std::string session_uuid);
110 JACKAudioBackend* engine;
111 boost::function<void()> f;
114 ThreadData (JACKAudioBackend* e, boost::function<void()> fp, size_t stacksz)
115 : engine (e) , f (fp) , stacksize (stacksz) {}
118 void* process_thread ();
119 static void* _start_process_thread (void*);
121 ChanCount n_physical (unsigned long) const;
122 void get_physical (DataType, unsigned long, std::vector<std::string> &);
126 std::string _target_device;
127 float _target_sample_rate;
128 uint32_t _target_buffer_size;
129 SampleFormat _target_sample_format;
130 bool _target_interleaved;
131 uint32_t _target_input_channels;
132 uint32_t _target_output_channels;
133 uint32_t _target_systemic_input_latency;
134 uint32_t _target_systemic_output_latency;
136 uint32_t _current_sample_rate;
137 uint32_t _current_buffer_size;
138 uint32_t _current_usecs_per_cycle;
144 #endif /* __ardour_audiobackend_h__ */