diff options
author | Carl Hetherington <carl@carlh.net> | 2010-07-06 00:16:36 +0000 |
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committer | Carl Hetherington <carl@carlh.net> | 2010-07-06 00:16:36 +0000 |
commit | 91850f0eb4ab9f63bc6582d042d5495ea1968031 (patch) | |
tree | fb73d1ed43c228984cdd61c70f19d81e82f420a4 /libs/midi++2/port.cc | |
parent | dc1e5d09a27180b35453b45edaeb0a117d1489f9 (diff) |
Remove non-JACK midi++ ports.
git-svn-id: svn://localhost/ardour2/branches/3.0@7377 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/midi++2/port.cc')
-rw-r--r-- | libs/midi++2/port.cc | 478 |
1 files changed, 412 insertions, 66 deletions
diff --git a/libs/midi++2/port.cc b/libs/midi++2/port.cc index 6694249b61..457ff1c358 100644 --- a/libs/midi++2/port.cc +++ b/libs/midi++2/port.cc @@ -22,24 +22,37 @@ #include <fcntl.h> #include <errno.h> +#include <jack/jack.h> +#include <jack/midiport.h> + #include "pbd/xml++.h" #include "pbd/error.h" #include "pbd/failed_constructor.h" +#include "pbd/convert.h" +#include "pbd/strsplit.h" #include "midi++/types.h" #include "midi++/port.h" #include "midi++/channel.h" -#include "midi++/factory.h" using namespace MIDI; using namespace std; using namespace PBD; size_t Port::nports = 0; - -Port::Port (const XMLNode& node) - : _currently_in_cycle(false) - , _nframes_this_cycle(0) +pthread_t Port::_process_thread; +Signal0<void> Port::JackHalted; +Signal0<void> Port::MakeConnections; + +Port::Port (const XMLNode& node, jack_client_t* jack_client) + : _currently_in_cycle (false) + , _nframes_this_cycle (0) + , _jack_client (jack_client) + , _jack_input_port (0) + , _jack_output_port (0) + , _last_read_index (0) + , output_fifo (512) + , input_fifo (1024) { Descriptor desc (node); @@ -47,13 +60,9 @@ Port::Port (const XMLNode& node) succeeds. */ - bytes_written = 0; - bytes_read = 0; input_parser = 0; output_parser = 0; - slowdown = 0; - _devname = desc.device; _tagname = desc.tag; _mode = desc.mode; @@ -80,6 +89,15 @@ Port::Port (const XMLNode& node) _channel[i]->connect_output_signals (); } } + + if (!create_ports (node)) { + _ok = true; + } + + MakeConnections.connect_same_thread (connect_connection, boost::bind (&Port::make_connections, this)); + JackHalted.connect_same_thread (halt_connection, boost::bind (&Port::jack_halted, this)); + + set_state (node); } @@ -88,6 +106,20 @@ Port::~Port () for (int i = 0; i < 16; i++) { delete _channel[i]; } + + if (_jack_input_port) { + if (_jack_client) { + jack_port_unregister (_jack_client, _jack_input_port); + } + _jack_input_port = 0; + } + + if (_jack_output_port) { + if (_jack_client) { + jack_port_unregister (_jack_client, _jack_input_port); + } + _jack_input_port = 0; + } } void @@ -149,24 +181,293 @@ Port::cycle_start (nframes_t nframes) { _currently_in_cycle = true; _nframes_this_cycle = nframes; + + assert(_nframes_this_cycle == nframes); + _last_read_index = 0; + _last_write_timestamp = 0; + + if (_jack_output_port != 0) { + // output + void *buffer = jack_port_get_buffer (_jack_output_port, nframes); + jack_midi_clear_buffer (buffer); + flush (buffer); + } + + if (_jack_input_port != 0) { + // input + void* jack_buffer = jack_port_get_buffer(_jack_input_port, nframes); + const nframes_t event_count = jack_midi_get_event_count(jack_buffer); + + jack_midi_event_t ev; + timestamp_t cycle_start_frame = jack_last_frame_time (_jack_client); + + for (nframes_t i = 0; i < event_count; ++i) { + jack_midi_event_get (&ev, jack_buffer, i); + input_fifo.write (cycle_start_frame + ev.time, (Evoral::EventType) 0, ev.size, ev.buffer); + } + + if (event_count) { + xthread.wakeup (); + } + } } void Port::cycle_end () { + if (_jack_output_port != 0) { + flush (jack_port_get_buffer (_jack_output_port, _nframes_this_cycle)); + } + _currently_in_cycle = false; _nframes_this_cycle = 0; } -XMLNode& +std::ostream & MIDI::operator << ( std::ostream & os, const MIDI::Port & port ) +{ + using namespace std; + os << "MIDI::Port { "; + os << "name: " << port.name(); + os << "; "; + os << "mode: " << port.mode(); + os << "; "; + os << "ok: " << port.ok(); + os << "; "; + os << " }"; + return os; +} + +Port::Descriptor::Descriptor (const XMLNode& node) +{ + const XMLProperty *prop; + bool have_tag = false; + bool have_mode = false; + + if ((prop = node.property ("tag")) != 0) { + tag = prop->value(); + have_tag = true; + } + + if ((prop = node.property ("mode")) != 0) { + + mode = O_RDWR; + + if (strings_equal_ignore_case (prop->value(), "output") || strings_equal_ignore_case (prop->value(), "out")) { + mode = O_WRONLY; + } else if (strings_equal_ignore_case (prop->value(), "input") || strings_equal_ignore_case (prop->value(), "in")) { + mode = O_RDONLY; + } + + have_mode = true; + } + + if (!have_tag || !have_mode) { + throw failed_constructor(); + } +} + +void +Port::jack_halted () +{ + _jack_client = 0; + _jack_input_port = 0; + _jack_output_port = 0; +} + +int +Port::write(byte * msg, size_t msglen, timestamp_t timestamp) +{ + int ret = 0; + + if (!_jack_output_port) { + return ret; + } + + if (!is_process_thread()) { + + Glib::Mutex::Lock lm (output_fifo_lock); + RingBuffer< Evoral::Event<double> >::rw_vector vec = { { 0, 0 }, { 0, 0} }; + + output_fifo.get_write_vector (&vec); + + if (vec.len[0] + vec.len[1] < 1) { + error << "no space in FIFO for non-process thread MIDI write" << endmsg; + return 0; + } + + if (vec.len[0]) { + if (!vec.buf[0]->owns_buffer()) { + vec.buf[0]->set_buffer (0, 0, true); + } + vec.buf[0]->set (msg, msglen, timestamp); + } else { + if (!vec.buf[1]->owns_buffer()) { + vec.buf[1]->set_buffer (0, 0, true); + } + vec.buf[1]->set (msg, msglen, timestamp); + } + + output_fifo.increment_write_idx (1); + + ret = msglen; + + } else { + + // XXX This had to be temporarily commented out to make export work again + if (!(timestamp < _nframes_this_cycle)) { + std::cerr << "assertion timestamp < _nframes_this_cycle failed!" << std::endl; + } + + if (_currently_in_cycle) { + if (timestamp == 0) { + timestamp = _last_write_timestamp; + } + + if (jack_midi_event_write (jack_port_get_buffer (_jack_output_port, _nframes_this_cycle), + timestamp, msg, msglen) == 0) { + ret = msglen; + _last_write_timestamp = timestamp; + + } else { + ret = 0; + cerr << "write of " << msglen << " failed, port holds " + << jack_midi_get_event_count (jack_port_get_buffer (_jack_output_port, _nframes_this_cycle)) + << endl; + } + } else { + cerr << "write to JACK midi port failed: not currently in a process cycle." << endl; + } + } + + if (ret > 0 && output_parser) { + // ardour doesn't care about this and neither should your app, probably + // output_parser->raw_preparse (*output_parser, msg, ret); + for (int i = 0; i < ret; i++) { + output_parser->scanner (msg[i]); + } + // ardour doesn't care about this and neither should your app, probably + // output_parser->raw_postparse (*output_parser, msg, ret); + } + + return ret; +} + +void +Port::flush (void* jack_port_buffer) +{ + RingBuffer< Evoral::Event<double> >::rw_vector vec = { { 0, 0 }, { 0, 0 } }; + size_t written; + + output_fifo.get_read_vector (&vec); + + if (vec.len[0] + vec.len[1]) { + // cerr << "Flush " << vec.len[0] + vec.len[1] << " events from non-process FIFO\n"; + } + + if (vec.len[0]) { + Evoral::Event<double>* evp = vec.buf[0]; + + for (size_t n = 0; n < vec.len[0]; ++n, ++evp) { + jack_midi_event_write (jack_port_buffer, + (timestamp_t) evp->time(), evp->buffer(), evp->size()); + } + } + + if (vec.len[1]) { + Evoral::Event<double>* evp = vec.buf[1]; + + for (size_t n = 0; n < vec.len[1]; ++n, ++evp) { + jack_midi_event_write (jack_port_buffer, + (timestamp_t) evp->time(), evp->buffer(), evp->size()); + } + } + + if ((written = vec.len[0] + vec.len[1]) != 0) { + output_fifo.increment_read_idx (written); + } +} + +int +Port::read (byte *, size_t) +{ + timestamp_t time; + Evoral::EventType type; + uint32_t size; + byte buffer[input_fifo.capacity()]; + + while (input_fifo.read (&time, &type, &size, buffer)) { + if (input_parser) { + input_parser->set_timestamp (time); + for (uint32_t i = 0; i < size; ++i) { + input_parser->scanner (buffer[i]); + } + } + } + + return 0; +} + +int +Port::create_ports(const XMLNode& node) +{ + Descriptor desc (node); + + assert(!_jack_input_port); + assert(!_jack_output_port); + + if (desc.mode == O_RDWR || desc.mode == O_WRONLY) { + _jack_output_port_name = string(desc.tag).append ("_out"); + } + + if (desc.mode == O_RDWR || desc.mode == O_RDONLY) { + _jack_input_port_name = string(desc.tag).append ("_in"); + } + + return create_ports (); +} + +int +Port::create_ports () +{ + bool ret = true; + + jack_nframes_t nframes = jack_get_buffer_size(_jack_client); + + if (!_jack_output_port_name.empty()) { + _jack_output_port = jack_port_register(_jack_client, _jack_output_port_name.c_str(), + JACK_DEFAULT_MIDI_TYPE, JackPortIsOutput, 0); + if (_jack_output_port) { + jack_midi_clear_buffer(jack_port_get_buffer(_jack_output_port, nframes)); + } + ret = ret && (_jack_output_port != NULL); + } + + if (!_jack_input_port_name.empty()) { + _jack_input_port = jack_port_register(_jack_client, _jack_input_port_name.c_str(), + JACK_DEFAULT_MIDI_TYPE, JackPortIsInput, 0); + if (_jack_input_port) { + jack_midi_clear_buffer(jack_port_get_buffer(_jack_input_port, nframes)); + } + ret = ret && (_jack_input_port != NULL); + } + + return ret ? 0 : -1; +} + +XMLNode& Port::get_state () const { - XMLNode* node = new XMLNode ("MIDI-port"); - node->add_property ("tag", _tagname); - node->add_property ("device", _devname); - node->add_property ("mode", PortFactory::mode_to_string (_mode)); - node->add_property ("type", get_typestring()); + XMLNode* root = new XMLNode ("MIDI-port"); + root->add_property ("tag", _tagname); + if (_mode == O_RDONLY) { + root->add_property ("mode", "input"); + } else if (_mode == O_WRONLY) { + root->add_property ("mode", "output"); + } else { + root->add_property ("mode", "duplex"); + } + #if 0 byte device_inquiry[6]; @@ -180,76 +481,121 @@ Port::get_state () const write (device_inquiry, sizeof (device_inquiry), 0); #endif - return *node; + if (_jack_output_port) { + + const char** jc = jack_port_get_connections (_jack_output_port); + string connection_string; + if (jc) { + for (int i = 0; jc[i]; ++i) { + if (i > 0) { + connection_string += ','; + } + connection_string += jc[i]; + } + free (jc); + } + + if (!connection_string.empty()) { + root->add_property ("outbound", connection_string); + } + } else { + if (!_outbound_connections.empty()) { + root->add_property ("outbound", _outbound_connections); + } + } + + if (_jack_input_port) { + + const char** jc = jack_port_get_connections (_jack_input_port); + string connection_string; + if (jc) { + for (int i = 0; jc[i]; ++i) { + if (i > 0) { + connection_string += ','; + } + connection_string += jc[i]; + } + free (jc); + } + + if (!connection_string.empty()) { + root->add_property ("inbound", connection_string); + } + } else { + if (!_inbound_connections.empty()) { + root->add_property ("inbound", _inbound_connections); + } + } + + return *root; } void -Port::set_state (const XMLNode& /*node*/) +Port::set_state (const XMLNode& node) { - // relax + const XMLProperty* prop; + + if ((prop = node.property ("inbound")) != 0 && _jack_input_port) { + _inbound_connections = prop->value (); + } + + if ((prop = node.property ("outbound")) != 0 && _jack_output_port) { + _outbound_connections = prop->value(); + } } void -Port::gtk_read_callback (void *ptr, int /*fd*/, int /*cond*/) +Port::make_connections () { - byte buf[64]; - ((Port *)ptr)->read (buf, sizeof (buf)); + if (!_inbound_connections.empty()) { + vector<string> ports; + split (_inbound_connections, ports, ','); + for (vector<string>::iterator x = ports.begin(); x != ports.end(); ++x) { + if (_jack_client) { + jack_connect (_jack_client, (*x).c_str(), jack_port_name (_jack_input_port)); + /* ignore failures */ + } + } + } + + if (!_outbound_connections.empty()) { + vector<string> ports; + split (_outbound_connections, ports, ','); + for (vector<string>::iterator x = ports.begin(); x != ports.end(); ++x) { + if (_jack_client) { + jack_connect (_jack_client, jack_port_name (_jack_output_port), (*x).c_str()); + /* ignore failures */ + } + } + } + connect_connection.disconnect (); } void -Port::write_callback (byte *msg, unsigned int len, void *ptr) +Port::set_process_thread (pthread_t thr) { - ((Port *)ptr)->write (msg, len, 0); + _process_thread = thr; } -std::ostream & MIDI::operator << ( std::ostream & os, const MIDI::Port & port ) +bool +Port::is_process_thread() { - using namespace std; - os << "MIDI::Port { "; - os << "device: " << port.device(); - os << "; "; - os << "name: " << port.name(); - os << "; "; - os << "type: " << port.type(); - os << "; "; - os << "mode: " << port.mode(); - os << "; "; - os << "ok: " << port.ok(); - os << "; "; - os << " }"; - return os; + return (pthread_self() == _process_thread); } -Port::Descriptor::Descriptor (const XMLNode& node) +void +Port::reestablish (void* jack) { - const XMLProperty *prop; - bool have_tag = false; - bool have_device = false; - bool have_type = false; - bool have_mode = false; - - if ((prop = node.property ("tag")) != 0) { - tag = prop->value(); - have_tag = true; - } + _jack_client = static_cast<jack_client_t*> (jack); + int const r = create_ports (); - if ((prop = node.property ("device")) != 0) { - device = prop->value(); - have_device = true; - } - - if ((prop = node.property ("type")) != 0) { - type = PortFactory::string_to_type (prop->value()); - have_type = true; - } - - if ((prop = node.property ("mode")) != 0) { - mode = PortFactory::string_to_mode (prop->value()); - have_mode = true; - } - - if (!have_tag || !have_device || !have_type || !have_mode) { - throw failed_constructor(); + if (r) { + PBD::error << "could not reregister ports for " << name() << endmsg; } } +void +Port::reconnect () +{ + make_connections (); +} |