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/*
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 <stdint.h>
#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, void*);
~JACKAudioBackend ();
std::string name() const;
void* private_handle() const;
bool connected() const;
bool is_realtime () const;
std::vector<std::string> 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;
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;
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, pthread_t*, size_t stacksize);
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;
private:
JackConnection* _jack_connection; //< shared with JACKPortEngine
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*);
ChanCount n_physical (unsigned long) const;
void get_physical (DataType, unsigned long, std::vector<std::string> &);
/* pffooo */
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;
uint32_t _current_usecs_per_cycle;
uint32_t _current_systemic_input_latency;
uint32_t _current_systemic_output_latency;
};
} // namespace
#endif /* __ardour_audiobackend_h__ */
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