463 lines
15 KiB
C++
463 lines
15 KiB
C++
/*
|
|
* Copyright (C) 2014 Robin Gareus <robin@gareus.org>
|
|
* 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 __libbackend_alsa_audiobackend_h__
|
|
#define __libbackend_alsa_audiobackend_h__
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
#include <map>
|
|
#include <set>
|
|
|
|
#include <stdint.h>
|
|
#include <pthread.h>
|
|
|
|
#include <boost/shared_ptr.hpp>
|
|
|
|
#include "ardour/audio_backend.h"
|
|
#include "ardour/dsp_load_calculator.h"
|
|
#include "ardour/system_exec.h"
|
|
#include "ardour/types.h"
|
|
|
|
#include "ardouralsautil/deviceinfo.h"
|
|
|
|
#include "zita-alsa-pcmi.h"
|
|
#include "alsa_rawmidi.h"
|
|
#include "alsa_sequencer.h"
|
|
|
|
namespace ARDOUR {
|
|
|
|
class AlsaAudioBackend;
|
|
|
|
class AlsaMidiEvent {
|
|
public:
|
|
AlsaMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size);
|
|
AlsaMidiEvent (const AlsaMidiEvent& other);
|
|
~AlsaMidiEvent ();
|
|
size_t size () const { return _size; };
|
|
pframes_t timestamp () const { return _timestamp; };
|
|
const unsigned char* const_data () const { return _data; };
|
|
unsigned char* data () { return _data; };
|
|
bool operator< (const AlsaMidiEvent &other) const { return timestamp () < other.timestamp (); };
|
|
private:
|
|
size_t _size;
|
|
pframes_t _timestamp;
|
|
uint8_t *_data;
|
|
};
|
|
|
|
typedef std::vector<boost::shared_ptr<AlsaMidiEvent> > AlsaMidiBuffer;
|
|
|
|
class AlsaPort {
|
|
protected:
|
|
AlsaPort (AlsaAudioBackend &b, const std::string&, PortFlags);
|
|
public:
|
|
virtual ~AlsaPort ();
|
|
|
|
const std::string& name () const { return _name; }
|
|
const std::string& pretty_name () const { return _pretty_name; }
|
|
PortFlags flags () const { return _flags; }
|
|
|
|
int set_name (const std::string &name) { _name = name; return 0; }
|
|
int set_pretty_name (const std::string &name) { _pretty_name = name; return 0; }
|
|
|
|
virtual DataType type () const = 0;
|
|
|
|
bool is_input () const { return flags () & IsInput; }
|
|
bool is_output () const { return flags () & IsOutput; }
|
|
bool is_physical () const { return flags () & IsPhysical; }
|
|
bool is_terminal () const { return flags () & IsTerminal; }
|
|
bool is_connected () const { return _connections.size () != 0; }
|
|
bool is_connected (const AlsaPort *port) const;
|
|
bool is_physically_connected () const;
|
|
|
|
const std::vector<AlsaPort *>& get_connections () const { return _connections; }
|
|
|
|
int connect (AlsaPort *port);
|
|
int disconnect (AlsaPort *port);
|
|
void disconnect_all ();
|
|
|
|
virtual void* get_buffer (pframes_t nframes) = 0;
|
|
|
|
const LatencyRange latency_range (bool for_playback) const
|
|
{
|
|
return for_playback ? _playback_latency_range : _capture_latency_range;
|
|
}
|
|
|
|
void set_latency_range (const LatencyRange &latency_range, bool for_playback)
|
|
{
|
|
if (for_playback)
|
|
{
|
|
_playback_latency_range = latency_range;
|
|
}
|
|
else
|
|
{
|
|
_capture_latency_range = latency_range;
|
|
}
|
|
}
|
|
|
|
private:
|
|
AlsaAudioBackend &_alsa_backend;
|
|
std::string _name;
|
|
std::string _pretty_name;
|
|
const PortFlags _flags;
|
|
LatencyRange _capture_latency_range;
|
|
LatencyRange _playback_latency_range;
|
|
std::vector<AlsaPort*> _connections;
|
|
|
|
void _connect (AlsaPort* , bool);
|
|
void _disconnect (AlsaPort* , bool);
|
|
|
|
}; // class AlsaPort
|
|
|
|
class AlsaAudioPort : public AlsaPort {
|
|
public:
|
|
AlsaAudioPort (AlsaAudioBackend &b, const std::string&, PortFlags);
|
|
~AlsaAudioPort ();
|
|
|
|
DataType type () const { return DataType::AUDIO; };
|
|
|
|
Sample* buffer () { return _buffer; }
|
|
const Sample* const_buffer () const { return _buffer; }
|
|
void* get_buffer (pframes_t nframes);
|
|
|
|
private:
|
|
Sample _buffer[8192];
|
|
}; // class AlsaAudioPort
|
|
|
|
class AlsaMidiPort : public AlsaPort {
|
|
public:
|
|
AlsaMidiPort (AlsaAudioBackend &b, const std::string&, PortFlags);
|
|
~AlsaMidiPort ();
|
|
|
|
DataType type () const { return DataType::MIDI; };
|
|
|
|
void* get_buffer (pframes_t nframes);
|
|
const AlsaMidiBuffer * const_buffer () const { return & _buffer[_bufperiod]; }
|
|
|
|
void next_period() { if (_n_periods > 1) { get_buffer(0); _bufperiod = (_bufperiod + 1) % _n_periods; } }
|
|
void set_n_periods(int n) { if (n > 0 && n < 4) { _n_periods = n; } }
|
|
|
|
private:
|
|
AlsaMidiBuffer _buffer[3];
|
|
int _n_periods;
|
|
int _bufperiod;
|
|
}; // class AlsaMidiPort
|
|
|
|
class AlsaAudioBackend : public AudioBackend {
|
|
friend class AlsaPort;
|
|
public:
|
|
AlsaAudioBackend (AudioEngine& e, AudioBackendInfo& info);
|
|
~AlsaAudioBackend ();
|
|
|
|
/* AUDIOBACKEND API */
|
|
|
|
std::string name () const;
|
|
bool is_realtime () const;
|
|
|
|
bool use_separate_input_and_output_devices () const { return true; }
|
|
bool can_set_period_size () const { return true; }
|
|
|
|
std::vector<DeviceStatus> enumerate_devices () const;
|
|
std::vector<DeviceStatus> enumerate_input_devices () const;
|
|
std::vector<DeviceStatus> enumerate_output_devices () const;
|
|
std::vector<float> available_sample_rates (const std::string& device) const;
|
|
std::vector<float> available_sample_rates2 (const std::string&, const std::string&) const;
|
|
std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
|
|
std::vector<uint32_t> available_buffer_sizes2 (const std::string&, const std::string&) const;
|
|
std::vector<uint32_t> available_period_sizes (const std::string& driver) 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;
|
|
|
|
bool can_change_systemic_latency_when_running () const { return true; }
|
|
|
|
int set_device_name (const std::string&);
|
|
int set_input_device_name (const std::string&);
|
|
int set_output_device_name (const std::string&);
|
|
int set_sample_rate (float);
|
|
int set_buffer_size (uint32_t);
|
|
int set_peridod_size (uint32_t);
|
|
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);
|
|
int set_systemic_midi_input_latency (std::string const, uint32_t);
|
|
int set_systemic_midi_output_latency (std::string const, uint32_t);
|
|
|
|
int reset_device () { return 0; };
|
|
|
|
/* Retrieving parameters */
|
|
std::string device_name () const;
|
|
std::string input_device_name () const;
|
|
std::string output_device_name () const;
|
|
float sample_rate () const;
|
|
uint32_t buffer_size () const;
|
|
uint32_t period_size () 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;
|
|
uint32_t systemic_midi_input_latency (std::string const) const;
|
|
uint32_t systemic_midi_output_latency (std::string const) const;
|
|
|
|
bool can_set_systemic_midi_latencies () const { return true; }
|
|
|
|
/* External control app */
|
|
std::string control_app_name () const { return std::string (); }
|
|
void launch_control_app () {}
|
|
|
|
/* MIDI */
|
|
std::vector<std::string> enumerate_midi_options () const;
|
|
int set_midi_option (const std::string&);
|
|
std::string midi_option () const;
|
|
|
|
std::vector<DeviceStatus> enumerate_midi_devices () const;
|
|
int set_midi_device_enabled (std::string const, bool);
|
|
bool midi_device_enabled (std::string const) const;
|
|
|
|
/* State Control */
|
|
protected:
|
|
int _start (bool for_latency_measurement);
|
|
public:
|
|
int stop ();
|
|
int freewheel (bool);
|
|
float dsp_load () const;
|
|
size_t raw_buffer_size (DataType t);
|
|
|
|
/* Process time */
|
|
framepos_t sample_time ();
|
|
framepos_t sample_time_at_cycle_start ();
|
|
pframes_t samples_since_cycle_start ();
|
|
|
|
int create_process_thread (boost::function<void()> func);
|
|
int join_process_threads ();
|
|
bool in_process_thread ();
|
|
uint32_t process_thread_count ();
|
|
|
|
void update_latencies ();
|
|
|
|
/* PORTENGINE API */
|
|
|
|
void* private_handle () const;
|
|
const std::string& my_name () const;
|
|
bool available () 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_port_property (PortHandle, const std::string& key, std::string& value, std::string& type) 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);
|
|
|
|
int connect (const std::string& src, const std::string& dst);
|
|
int disconnect (const std::string& src, const std::string& dst);
|
|
int connect (PortHandle, const std::string&);
|
|
int disconnect (PortHandle, const std::string&);
|
|
int disconnect_all (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);
|
|
|
|
/* 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);
|
|
|
|
/* Discovering 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);
|
|
|
|
void* main_process_thread ();
|
|
|
|
private:
|
|
std::string _instance_name;
|
|
Alsa_pcmi *_pcmi;
|
|
|
|
bool _run; /* keep going or stop, ardour thread */
|
|
bool _active; /* is running, process thread */
|
|
bool _freewheel;
|
|
bool _freewheeling;
|
|
bool _measure_latency;
|
|
|
|
uint64_t _last_process_start;
|
|
|
|
static std::vector<std::string> _midi_options;
|
|
static std::vector<AudioBackend::DeviceStatus> _input_audio_device_status;
|
|
static std::vector<AudioBackend::DeviceStatus> _output_audio_device_status;
|
|
static std::vector<AudioBackend::DeviceStatus> _duplex_audio_device_status;
|
|
static std::vector<AudioBackend::DeviceStatus> _midi_device_status;
|
|
static ARDOUR::ALSADeviceInfo _input_audio_device_info;
|
|
static ARDOUR::ALSADeviceInfo _output_audio_device_info;
|
|
|
|
mutable std::string _input_audio_device;
|
|
mutable std::string _output_audio_device;
|
|
std::string _midi_driver_option;
|
|
|
|
/* audio device reservation */
|
|
ARDOUR::SystemExec *_device_reservation;
|
|
PBD::ScopedConnectionList _reservation_connection;
|
|
void reservation_stdout (std::string, size_t);
|
|
bool acquire_device(const char* device_name);
|
|
void release_device();
|
|
bool _reservation_succeeded;
|
|
|
|
/* audio settings */
|
|
float _samplerate;
|
|
size_t _samples_per_period;
|
|
size_t _periods_per_cycle;
|
|
static size_t _max_buffer_size;
|
|
|
|
uint32_t _n_inputs;
|
|
uint32_t _n_outputs;
|
|
|
|
uint32_t _systemic_audio_input_latency;
|
|
uint32_t _systemic_audio_output_latency;
|
|
|
|
/* midi settings */
|
|
struct AlsaMidiDeviceInfo {
|
|
bool enabled;
|
|
uint32_t systemic_input_latency;
|
|
uint32_t systemic_output_latency;
|
|
AlsaMidiDeviceInfo()
|
|
: enabled (true)
|
|
, systemic_input_latency (0)
|
|
, systemic_output_latency (0)
|
|
{}
|
|
};
|
|
|
|
mutable std::map<std::string, struct AlsaMidiDeviceInfo *> _midi_devices;
|
|
struct AlsaMidiDeviceInfo * midi_device_info(std::string const) const;
|
|
|
|
/* processing */
|
|
float _dsp_load;
|
|
ARDOUR::DSPLoadCalculator _dsp_load_calc;
|
|
framecnt_t _processed_samples;
|
|
pthread_t _main_thread;
|
|
|
|
/* process threads */
|
|
static void* alsa_process_thread (void *);
|
|
std::vector<pthread_t> _threads;
|
|
|
|
struct ThreadData {
|
|
AlsaAudioBackend* engine;
|
|
boost::function<void ()> f;
|
|
size_t stacksize;
|
|
|
|
ThreadData (AlsaAudioBackend* e, boost::function<void ()> fp, size_t stacksz)
|
|
: engine (e) , f (fp) , stacksize (stacksz) {}
|
|
};
|
|
|
|
/* port engine */
|
|
PortHandle add_port (const std::string& shortname, ARDOUR::DataType, ARDOUR::PortFlags);
|
|
int register_system_audio_ports ();
|
|
int register_system_midi_ports (const std::string device = "");
|
|
void unregister_ports (bool system_only = false);
|
|
|
|
std::vector<AlsaPort *> _ports;
|
|
std::vector<AlsaPort *> _system_inputs;
|
|
std::vector<AlsaPort *> _system_outputs;
|
|
std::vector<AlsaPort *> _system_midi_in;
|
|
std::vector<AlsaPort *> _system_midi_out;
|
|
|
|
std::vector<AlsaMidiOut *> _rmidi_out;
|
|
std::vector<AlsaMidiIn *> _rmidi_in;
|
|
|
|
unsigned _midi_ins;
|
|
unsigned _midi_outs;
|
|
|
|
struct PortConnectData {
|
|
std::string a;
|
|
std::string b;
|
|
bool c;
|
|
|
|
PortConnectData (const std::string& a, const std::string& b, bool c)
|
|
: a (a) , b (b) , c (c) {}
|
|
};
|
|
|
|
std::vector<PortConnectData *> _port_connection_queue;
|
|
pthread_mutex_t _port_callback_mutex;
|
|
bool _port_change_flag;
|
|
|
|
void port_connect_callback (const std::string& a, const std::string& b, bool conn) {
|
|
pthread_mutex_lock (&_port_callback_mutex);
|
|
_port_connection_queue.push_back(new PortConnectData(a, b, conn));
|
|
pthread_mutex_unlock (&_port_callback_mutex);
|
|
}
|
|
|
|
void port_connect_add_remove_callback () {
|
|
pthread_mutex_lock (&_port_callback_mutex);
|
|
_port_change_flag = true;
|
|
pthread_mutex_unlock (&_port_callback_mutex);
|
|
}
|
|
|
|
bool valid_port (PortHandle port) const {
|
|
return std::find (_ports.begin (), _ports.end (), (AlsaPort*)port) != _ports.end ();
|
|
}
|
|
|
|
AlsaPort * find_port (const std::string& port_name) const {
|
|
for (std::vector<AlsaPort*>::const_iterator it = _ports.begin (); it != _ports.end (); ++it) {
|
|
if ((*it)->name () == port_name) {
|
|
return *it;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void update_systemic_audio_latencies ();
|
|
void update_systemic_midi_latencies ();
|
|
|
|
}; // class AlsaAudioBackend
|
|
|
|
} // namespace
|
|
|
|
#endif /* __libbackend_alsa_audiobackend_h__ */
|