along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id$
+ $Id: port.cc 11871 2012-04-10 16:27:01Z paul $
*/
#include <iostream>
#include <cstdio>
#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 "pbd/stacktrace.h"
#include "midi++/types.h"
#include "midi++/port.h"
using namespace std;
using namespace PBD;
-pthread_t Port::_process_thread;
-Signal0<void> Port::JackHalted;
-Signal0<void> Port::MakeConnections;
string Port::state_node_name = "MIDI-port";
-Port::Port (string const & name, Flags flags, jack_client_t* jack_client)
- : _currently_in_cycle (false)
- , _nframes_this_cycle (0)
- , _jack_client (jack_client)
- , _jack_port (0)
- , _last_read_index (0)
- , xthread (true)
- , output_fifo (512)
- , input_fifo (1024)
- , _flags (flags)
+Port::Port (string const & name, Flags flags)
+ : _flags (flags)
+ , _centrally_parsed (true)
{
- assert (jack_client);
init (name, flags);
}
-Port::Port (const XMLNode& node, jack_client_t* jack_client)
- : _currently_in_cycle (false)
- , _nframes_this_cycle (0)
- , _jack_client (jack_client)
- , _jack_port (0)
- , _last_read_index (0)
- , xthread (true)
- , output_fifo (512)
- , input_fifo (1024)
+Port::Port (const XMLNode& node)
+ : _centrally_parsed (true)
{
- assert (jack_client);
-
Descriptor desc (node);
init (desc.tag, desc.flags);
- set_state (node);
+ /* derived class must call ::set_state() */
}
void
_tagname = name;
_flags = flags;
- _parser = new Parser (*this);
+ _parser = new Parser ();
for (int i = 0; i < 16; i++) {
_channel[i] = new Channel (i, *this);
_channel[i]->connect_signals ();
}
-
- if (!create_port ()) {
- _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));
}
-
Port::~Port ()
{
for (int i = 0; i < 16; i++) {
delete _channel[i];
}
-
- if (_jack_port) {
- if (_jack_client) {
- jack_port_unregister (_jack_client, _jack_port);
- _jack_port = 0;
- }
- }
-}
-
-void
-Port::parse (framecnt_t timestamp)
-{
- byte buf[512];
-
- /* NOTE: parsing is done (if at all) by initiating a read from
- the port. Each port implementation calls on the parser
- once it has data ready.
- */
-
- _parser->set_timestamp (timestamp);
-
- while (1) {
-
- // cerr << "+++ READ ON " << name() << endl;
-
- int nread = read (buf, sizeof (buf));
-
- // cerr << "-- READ (" << nread << " ON " << name() << endl;
-
- if (nread > 0) {
- if ((size_t) nread < sizeof (buf)) {
- break;
- } else {
- continue;
- }
- } else if (nread == 0) {
- break;
- } else if (errno == EAGAIN) {
- break;
- } else {
- fatal << "Error reading from MIDI port " << name() << endmsg;
- /*NOTREACHED*/
- }
- }
}
/** Send a clock tick message.
return false;
}
-void
-Port::cycle_start (pframes_t nframes)
-{
- assert (_jack_port);
-
- _currently_in_cycle = true;
- _nframes_this_cycle = nframes;
-
- assert(_nframes_this_cycle == nframes);
- _last_read_index = 0;
- _last_write_timestamp = 0;
-
- if (sends_output()) {
- void *buffer = jack_port_get_buffer (_jack_port, nframes);
- jack_midi_clear_buffer (buffer);
- flush (buffer);
- }
-
- if (receives_input()) {
- void* jack_buffer = jack_port_get_buffer(_jack_port, nframes);
- const pframes_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 (pframes_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 (sends_output()) {
- flush (jack_port_get_buffer (_jack_port, _nframes_this_cycle));
- }
-
- _currently_in_cycle = false;
- _nframes_this_cycle = 0;
-}
-
std::ostream & MIDI::operator << ( std::ostream & os, const MIDI::Port & port )
{
using namespace std;
}
}
-void
-Port::jack_halted ()
-{
- _jack_client = 0;
- _jack_port = 0;
-}
-
-int
-Port::write(byte * msg, size_t msglen, timestamp_t timestamp)
-{
- int ret = 0;
-
- if (!sends_output()) {
- 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_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_port, _nframes_this_cycle))
- << endl;
- }
- } else {
- cerr << "write to JACK midi port failed: not currently in a process cycle." << endl;
- }
- }
-
- if (ret > 0 && _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++) {
- _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)
-{
- if (!receives_input()) {
- return 0;
- }
-
- timestamp_t time;
- Evoral::EventType type;
- uint32_t size;
- byte buffer[input_fifo.capacity()];
-
- while (input_fifo.read (&time, &type, &size, buffer)) {
- _parser->set_timestamp (time);
- for (uint32_t i = 0; i < size; ++i) {
- _parser->scanner (buffer[i]);
- }
- }
-
- return 0;
-}
-
-int
-Port::create_port ()
-{
- _jack_port = jack_port_register(_jack_client, _tagname.c_str(), JACK_DEFAULT_MIDI_TYPE, _flags, 0);
- return _jack_port == 0 ? -1 : 0;
-}
-
XMLNode&
Port::get_state () const
{
write (device_inquiry, sizeof (device_inquiry), 0);
#endif
- if (_jack_port) {
-
- const char** jc = jack_port_get_connections (_jack_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 ("connections", connection_string);
- }
- } else {
- if (!_connections.empty()) {
- root->add_property ("connections", _connections);
- }
- }
-
return *root;
}
if ((prop = node.property ("tag")) == 0 || prop->value() != _tagname) {
return;
}
-
- if ((prop = node.property ("connections")) != 0 && _jack_port) {
- _connections = prop->value ();
- }
-}
-
-void
-Port::make_connections ()
-{
- if (!_connections.empty()) {
- vector<string> ports;
- split (_connections, ports, ',');
- for (vector<string>::iterator x = ports.begin(); x != ports.end(); ++x) {
- if (_jack_client) {
- if (receives_input()) {
- jack_connect (_jack_client, (*x).c_str(), jack_port_name (_jack_port));
- } else {
- jack_connect (_jack_client, jack_port_name (_jack_port), (*x).c_str());
- }
- /* ignore failures */
- }
- }
- }
-
- connect_connection.disconnect ();
-}
-
-void
-Port::set_process_thread (pthread_t thr)
-{
- _process_thread = thr;
}
bool
-Port::is_process_thread()
-{
- return (pthread_self() == _process_thread);
-}
-
-void
-Port::reestablish (jack_client_t* jack)
-{
- _jack_client = jack;
- int const r = create_port ();
-
- if (r) {
- PBD::error << "could not reregister ports for " << name() << endmsg;
- }
-}
-
-void
-Port::reconnect ()
+Port::centrally_parsed() const
{
- make_connections ();
+ return _centrally_parsed;
}
projects / ardour.git / blobdiff