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livetrax/libs/backends/coreaudio/coreaudio_backend.h
Robin Gareus 74c4ca3e52
Reduce reliance on boost - the hard part 
the rest from `tools/convert_boost.sh`.

* replace boost::function, boost::bind with std::function and std::bind.

This required some manual fixes, notably std::placeholders,
some static_casts<>, and boost::function::clear -> = {}.
2024-10-19 03:47:21 +02:00

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/*
* Copyright (C) 2015-2018 Robin Gareus <robin@gareus.org>
* Copyright (C) 2016-2018 Paul Davis <paul@linuxaudiosystems.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __libbackend_coreaudio_backend_h__
#define __libbackend_coreaudio_backend_h__
#include <cstdint>
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include <pthread.h>
#include "pbd/natsort.h"
#include "ardour/audio_backend.h"
#include "ardour/dsp_load_calculator.h"
#include "ardour/port_engine_shared.h"
#include "ardour/types.h"
#include "coreaudio_pcmio.h"
#include "coremidi_io.h"
#define MaxCoreMidiEventSize 256 // matches CoreMidi's MIDIPacket (https://developer.apple.com/documentation/coremidi/midipacket)
namespace ARDOUR {
class CoreAudioBackend;
class CoreMidiEvent : public BackendMIDIEvent {
public:
CoreMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size);
CoreMidiEvent (const CoreMidiEvent& other);
size_t size () const { return _size; };
pframes_t timestamp () const { return _timestamp; };
const uint8_t* data () const { return _data; };
private:
size_t _size;
pframes_t _timestamp;
uint8_t _data[MaxCoreMidiEventSize];
};
typedef std::vector<CoreMidiEvent> CoreMidiBuffer;
class CoreAudioPort : public BackendPort {
public:
CoreAudioPort (CoreAudioBackend &b, const std::string&, PortFlags);
~CoreAudioPort ();
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 CoreAudioPort
class CoreMidiPort : public BackendPort {
public:
CoreMidiPort (CoreAudioBackend &b, const std::string&, PortFlags);
~CoreMidiPort ();
DataType type () const { return DataType::MIDI; };
void* get_buffer (pframes_t nframes);
const CoreMidiBuffer * 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 < 3) { _n_periods = n; } }
void parse_events (const uint64_t time, const uint8_t *data, const size_t size);
void clear_events ();
void reset_parser ();
private:
CoreMidiBuffer _buffer[2];
int _n_periods;
int _bufperiod;
int queue_event (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
bool process_byte (const uint64_t, const uint8_t);
void record_byte(uint8_t byte) {
if (_total_bytes < sizeof(_parser_buffer)) {
_parser_buffer[_total_bytes] = byte;
} else {
++_unbuffered_bytes;
}
++_total_bytes;
}
void prepare_byte_event(const uint64_t time, const uint8_t byte) {
_parser_buffer[0] = byte;
_event.prepare(time, 1);
}
bool prepare_buffered_event(const uint64_t time) {
const bool result = _unbuffered_bytes == 0;
if (result) {
_event.prepare(time, _total_bytes);
}
_total_bytes = 0;
_unbuffered_bytes = 0;
if (_status_byte >= 0xf0) {
_expected_bytes = 0;
_status_byte = 0;
}
return result;
}
struct ParserEvent {
uint64_t _time;
size_t _size;
bool _pending;
ParserEvent (const uint64_t time, const size_t size)
: _time(time)
, _size(size)
, _pending(false) {}
void prepare(const uint64_t time, const size_t size) {
_time = time;
_size = size;
_pending = true;
}
} _event;
bool _first_time;
size_t _unbuffered_bytes;
size_t _total_bytes;
size_t _expected_bytes;
uint8_t _status_byte;
uint8_t _parser_buffer[1024];
}; // class CoreMidiPort
class CoreAudioBackend : public AudioBackend, public PortEngineSharedImpl {
public:
CoreAudioBackend (AudioEngine& e, AudioBackendInfo& info);
~CoreAudioBackend ();
/* AUDIOBACKEND API */
std::string name () const;
bool is_realtime () const;
bool use_separate_input_and_output_devices () 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;
bool can_change_sample_rate_when_running () const;
bool can_change_buffer_size_when_running () const;
bool can_measure_systemic_latency () 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_interleaved (bool yn);
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) { return 0; }
int set_systemic_midi_output_latency (std::string const, uint32_t) { return 0; }
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;
bool interleaved () const;
uint32_t systemic_input_latency () const;
uint32_t systemic_output_latency () const;
uint32_t systemic_midi_input_latency (std::string const) const { return 0; }
uint32_t systemic_midi_output_latency (std::string const) const { return 0; }
bool can_set_systemic_midi_latencies () const { return false; /* XXX */}
/* External control app */
std::string control_app_name () const { return std::string ("Apple"); }
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 {
return std::vector<AudioBackend::DeviceStatus> ();
}
int set_midi_device_enabled (std::string const, bool) {
return true;
}
bool midi_device_enabled (std::string const) const {
return false;
}
// really private, but needing static access:
int process_callback(uint32_t, uint64_t);
void error_callback();
void halted_callback();
void xrun_callback();
void buffer_size_callback();
void sample_rate_callback();
void hw_changed_callback();
protected:
/* State Control */
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 */
samplepos_t sample_time ();
samplepos_t sample_time_at_cycle_start ();
pframes_t samples_since_cycle_start ();
int create_process_thread (std::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;
/* PortEngine API - forwarded to PortEngineSharedImpl */
bool port_is_physical (PortEngine::PortHandle ph) const { return PortEngineSharedImpl::port_is_physical (ph); }
void get_physical_outputs (DataType type, std::vector<std::string>& results) { PortEngineSharedImpl::get_physical_outputs (type, results); }
void get_physical_inputs (DataType type, std::vector<std::string>& results) { PortEngineSharedImpl::get_physical_inputs (type, results); }
ChanCount n_physical_outputs () const { return PortEngineSharedImpl::n_physical_outputs (); }
ChanCount n_physical_inputs () const { return PortEngineSharedImpl::n_physical_inputs (); }
uint32_t port_name_size () const { return PortEngineSharedImpl::port_name_size(); }
int set_port_name (PortEngine::PortHandle ph, const std::string& name) { return PortEngineSharedImpl::set_port_name (ph, name); }
std::string get_port_name (PortEngine::PortHandle ph) const { return PortEngineSharedImpl::get_port_name (ph); }
PortFlags get_port_flags (PortEngine::PortHandle ph) const { return PortEngineSharedImpl::get_port_flags (ph); }
PortEngine::PortPtr get_port_by_name (std::string const & name) const { return PortEngineSharedImpl::get_port_by_name (name); }
int get_port_property (PortEngine::PortHandle ph, const std::string& key, std::string& value, std::string& type) const { return PortEngineSharedImpl::get_port_property (ph, key, value, type); }
int set_port_property (PortEngine::PortHandle ph, const std::string& key, const std::string& value, const std::string& type) { return PortEngineSharedImpl::set_port_property (ph, key, value, type); }
int get_ports (const std::string& port_name_pattern, DataType type, PortFlags flags, std::vector<std::string>& results) const { return PortEngineSharedImpl::get_ports (port_name_pattern, type, flags, results); }
DataType port_data_type (PortEngine::PortHandle ph) const { return PortEngineSharedImpl::port_data_type (ph); }
PortEngine::PortPtr register_port (const std::string& shortname, ARDOUR::DataType type, ARDOUR::PortFlags flags) { return PortEngineSharedImpl::register_port (shortname, type, flags); }
void unregister_port (PortHandle ph) { if (!_run) return; PortEngineSharedImpl::unregister_port (ph); }
int connect (const std::string& src, const std::string& dst) { return PortEngineSharedImpl::connect (src, dst); }
int disconnect (const std::string& src, const std::string& dst) { return PortEngineSharedImpl::disconnect (src, dst); }
int connect (PortEngine::PortHandle ph, const std::string& other) { return PortEngineSharedImpl::connect (ph, other); }
int disconnect (PortEngine::PortHandle ph, const std::string& other) { return PortEngineSharedImpl::disconnect (ph, other); }
int disconnect_all (PortEngine::PortHandle ph) { return PortEngineSharedImpl::disconnect_all (ph); }
bool connected (PortEngine::PortHandle ph, bool process_callback_safe) { return PortEngineSharedImpl::connected (ph, process_callback_safe); }
bool connected_to (PortEngine::PortHandle ph, const std::string& other, bool process_callback_safe) { return PortEngineSharedImpl::connected_to (ph, other, process_callback_safe); }
bool physically_connected (PortEngine::PortHandle ph, bool process_callback_safe) { return PortEngineSharedImpl::physically_connected (ph, process_callback_safe); }
int get_connections (PortEngine::PortHandle ph, std::vector<std::string>& results, bool process_callback_safe) { return PortEngineSharedImpl::get_connections (ph, results, process_callback_safe); }
/* MIDI */
int midi_event_get (pframes_t& timestamp, size_t& size, uint8_t const** 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) {
return _midi_event_put (port_buffer, timestamp, buffer, 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);
/* Getting access to the data buffer for a port */
void* get_buffer (PortHandle, pframes_t);
void* freewheel_thread ();
void pre_process ();
void coremidi_rediscover ();
static int _midi_event_put (void* port_buffer, pframes_t timestamp, const uint8_t* buffer, size_t size);
private:
std::string _instance_name;
CoreAudioPCM *_pcmio;
CoreMidiIo *_midiio;
bool _run; /* keep going or stop, ardour thread */
bool _active_ca; /* is running, process thread */
bool _active_fw; /* is running, process thread */
bool _preinit;
bool _freewheeling;
bool _freewheel;
bool _freewheel_ack;
bool _reinit_thread_callback;
bool _measure_latency;
uint64_t _last_process_start;
pthread_mutex_t _process_callback_mutex;
pthread_mutex_t _freewheel_mutex;
pthread_cond_t _freewheel_signal;
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;
mutable std::string _input_audio_device;
mutable std::string _output_audio_device;
std::string _midi_driver_option;
/* audio settings */
float _samplerate;
size_t _samples_per_period;
static size_t _max_buffer_size;
uint32_t _systemic_audio_input_latency;
uint32_t _systemic_audio_output_latency;
uint32_t _hw_audio_input_latency;
uint32_t _hw_audio_output_latency;
/* coreaudio specific */
enum DeviceFilter { All, Input, Output, Duplex };
uint32_t name_to_id(std::string, DeviceFilter filter = All) const;
void unset_callbacks ();
/* processing */
float _dsp_load;
ARDOUR::DSPLoadCalculator _dsp_load_calc;
uint64_t _processed_samples;
pthread_t _main_thread;
pthread_t _freeewheel_thread;
/* process threads */
static void* coreaudio_process_thread (void *);
std::vector<pthread_t> _threads;
struct ThreadData {
CoreAudioBackend* engine;
std::function<void ()> f;
size_t stacksize;
double period_ns;
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 110000
bool _joined_workgroup;
os_workgroup_t _workgroup;
os_workgroup_join_token_s _join_token;
#endif
ThreadData (CoreAudioBackend* e, std::function<void ()> fp, size_t stacksz, double period)
: engine (e) , f (fp) , stacksize (stacksz), period_ns (period) {}
};
/* port engine */
int register_system_audio_ports ();
BackendPortPtr find_port_in (std::vector<BackendPortPtr> const & plist, const std::string& port_name) const {
for (std::vector<BackendPortPtr>::const_iterator it = plist.begin (); it != plist.end (); ++it) {
if ((*it)->name () == port_name) {
return *it;
}
}
return BackendPortPtr();
}
BackendPort* port_factory (std::string const & name, ARDOUR::DataType type, ARDOUR::PortFlags);
void reset_midi_parsers ();
}; // class CoreAudioBackend
} // namespace
#endif /* __libbackend_coreaudio_backend_h__ */
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