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livetrax/libs/ardour/io.cc

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/*
Copyright (C) 2000-2006 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.
*/
#include <fstream>
#include <algorithm>
#include <cmath>
#include <unistd.h>
#include <locale.h>
#include <errno.h>
#include <glibmm.h>
#include <glibmm/threads.h>
#include "pbd/xml++.h"
#include "pbd/replace_all.h"
#include "pbd/unknown_type.h"
#include "pbd/enumwriter.h"
#include "ardour/audioengine.h"
#include "ardour/buffer.h"
#include "ardour/buffer_set.h"
#include "ardour/debug.h"
#include "ardour/io.h"
#include "ardour/port.h"
#include "ardour/route.h"
#include "ardour/session.h"
#include "ardour/user_bundle.h"
#include "i18n.h"
#define BLOCK_PROCESS_CALLBACK() Glib::Threads::Mutex::Lock em (AudioEngine::instance()->process_lock())
using namespace std;
using namespace ARDOUR;
using namespace PBD;
const string IO::state_node_name = "IO";
bool IO::connecting_legal = false;
PBD::Signal0<int> IO::ConnectingLegal;
PBD::Signal1<void,ChanCount> IO::PortCountChanged;
/** @param default_type The type of port that will be created by ensure_io
* and friends if no type is explicitly requested (to avoid breakage).
*/
IO::IO (Session& s, const string& name, Direction dir, DataType default_type, bool sendish)
: SessionObject (s, name)
, _direction (dir)
, _default_type (default_type)
, _sendish (sendish)
{
_active = true;
Port::PostDisconnect.connect_same_thread (*this, boost::bind (&IO::disconnect_check, this, _1, _2));
pending_state_node = 0;
setup_bundle ();
}
IO::IO (Session& s, const XMLNode& node, DataType dt, bool sendish)
: SessionObject(s, "unnamed io")
, _direction (Input)
, _default_type (dt)
, _sendish (sendish)
{
_active = true;
pending_state_node = 0;
Port::PostDisconnect.connect_same_thread (*this, boost::bind (&IO::disconnect_check, this, _1, _2));
set_state (node, Stateful::loading_state_version);
setup_bundle ();
}
IO::~IO ()
{
Glib::Threads::Mutex::Lock lm (io_lock);
BLOCK_PROCESS_CALLBACK ();
for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) {
_session.engine().unregister_port (*i);
}
}
void
IO::disconnect_check (boost::shared_ptr<Port> a, boost::shared_ptr<Port> b)
{
/* this could be called from within our own ::disconnect() method(s)
or from somewhere that operates directly on a port. so, we don't
know for sure if we can take this lock or not. if we fail,
we assume that its safely locked by our own ::disconnect().
*/
Glib::Threads::Mutex::Lock tm (io_lock, Glib::Threads::TRY_LOCK);
if (tm.locked()) {
/* we took the lock, so we cannot be here from inside
* ::disconnect()
*/
if (_ports.contains (a) || _ports.contains (b)) {
changed (IOChange (IOChange::ConnectionsChanged), this); /* EMIT SIGNAL */
}
} else {
/* we didn't get the lock, so assume that we're inside
* ::disconnect(), and it will call changed() appropriately.
*/
}
}
void
IO::increment_port_buffer_offset (pframes_t offset)
{
/* io_lock, not taken: function must be called from Session::process() calltree */
if (_direction == Output) {
for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) {
i->increment_port_buffer_offset (offset);
}
}
}
void
IO::silence (framecnt_t nframes)
{
/* io_lock, not taken: function must be called from Session::process() calltree */
for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) {
i->get_buffer(nframes).silence (nframes);
}
}
/** Set _bundles_connected to those bundles that are connected such that every
* port on every bundle channel x is connected to port x in _ports.
*/
void
IO::check_bundles_connected ()
{
std::vector<UserBundleInfo*> new_list;
for (std::vector<UserBundleInfo*>::iterator i = _bundles_connected.begin(); i != _bundles_connected.end(); ++i) {
uint32_t const N = (*i)->bundle->nchannels().n_total();
if (_ports.num_ports() < N) {
continue;
}
bool ok = true;
for (uint32_t j = 0; j < N; ++j) {
/* Every port on bundle channel j must be connected to our input j */
Bundle::PortList const pl = (*i)->bundle->channel_ports (j);
for (uint32_t k = 0; k < pl.size(); ++k) {
if (_ports.port(j)->connected_to (pl[k]) == false) {
ok = false;
break;
}
}
if (ok == false) {
break;
}
}
if (ok) {
new_list.push_back (*i);
} else {
delete *i;
}
}
_bundles_connected = new_list;
}
int
IO::disconnect (boost::shared_ptr<Port> our_port, string other_port, void* src)
{
if (other_port.length() == 0 || our_port == 0) {
return 0;
}
{
Glib::Threads::Mutex::Lock lm (io_lock);
/* check that our_port is really one of ours */
if ( ! _ports.contains(our_port)) {
return -1;
}
/* disconnect it from the source */
if (our_port->disconnect (other_port)) {
error << string_compose(_("IO: cannot disconnect port %1 from %2"), our_port->name(), other_port) << endmsg;
return -1;
}
check_bundles_connected ();
}
changed (IOChange (IOChange::ConnectionsChanged), src); /* EMIT SIGNAL */
_session.set_dirty ();
return 0;
}
int
IO::connect (boost::shared_ptr<Port> our_port, string other_port, void* src)
{
if (other_port.length() == 0 || our_port == 0) {
return 0;
}
{
Glib::Threads::Mutex::Lock lm (io_lock);
/* check that our_port is really one of ours */
if ( ! _ports.contains(our_port) ) {
return -1;
}
/* connect it to the source */
if (our_port->connect (other_port)) {
return -1;
}
}
changed (IOChange (IOChange::ConnectionsChanged), src); /* EMIT SIGNAL */
_session.set_dirty ();
return 0;
}
int
IO::remove_port (boost::shared_ptr<Port> port, void* src)
{
ChanCount before = _ports.count ();
ChanCount after = before;
after.set (port->type(), after.get (port->type()) - 1);
boost::optional<bool> const r = PortCountChanging (after); /* EMIT SIGNAL */
if (r.get_value_or (false)) {
return -1;
}
IOChange change;
{
BLOCK_PROCESS_CALLBACK ();
{
Glib::Threads::Mutex::Lock lm (io_lock);
if (_ports.remove(port)) {
change.type = IOChange::Type (change.type | IOChange::ConfigurationChanged);
change.before = before;
change.after = _ports.count ();
if (port->connected()) {
change.type = IOChange::Type (change.type | IOChange::ConnectionsChanged);
}
_session.engine().unregister_port (port);
check_bundles_connected ();
}
}
PortCountChanged (n_ports()); /* EMIT SIGNAL */
if (change.type != IOChange::NoChange) {
changed (change, src);
_buffers.attach_buffers (_ports);
}
}
if (change.type & IOChange::ConfigurationChanged) {
setup_bundle ();
}
if (change.type == IOChange::NoChange) {
return -1;
}
_session.set_dirty ();
return 0;
}
/** Add a port.
*
* @param destination Name of port to connect new port to.
* @param src Source for emitted ConfigurationChanged signal.
* @param type Data type of port. Default value (NIL) will use this IO's default type.
*/
int
IO::add_port (string destination, void* src, DataType type)
{
boost::shared_ptr<Port> our_port;
if (type == DataType::NIL) {
type = _default_type;
}
ChanCount before = _ports.count ();
ChanCount after = before;
after.set (type, after.get (type) + 1);
bool const r = PortCountChanging (after); /* EMIT SIGNAL */
if (r) {
return -1;
}
IOChange change;
{
BLOCK_PROCESS_CALLBACK ();
{
Glib::Threads::Mutex::Lock lm (io_lock);
/* Create a new port */
string portname = build_legal_port_name (type);
if (_direction == Input) {
if ((our_port = _session.engine().register_input_port (type, portname)) == 0) {
error << string_compose(_("IO: cannot register input port %1"), portname) << endmsg;
return -1;
}
} else {
if ((our_port = _session.engine().register_output_port (type, portname)) == 0) {
error << string_compose(_("IO: cannot register output port %1"), portname) << endmsg;
return -1;
}
}
change.before = _ports.count ();
_ports.add (our_port);
}
PortCountChanged (n_ports()); /* EMIT SIGNAL */
change.type = IOChange::ConfigurationChanged;
change.after = _ports.count ();
changed (change, src); /* EMIT SIGNAL */
_buffers.attach_buffers (_ports);
}
if (!destination.empty()) {
if (our_port->connect (destination)) {
return -1;
}
}
setup_bundle ();
_session.set_dirty ();
return 0;
}
int
IO::disconnect (void* src)
{
{
Glib::Threads::Mutex::Lock lm (io_lock);
for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) {
i->disconnect_all ();
}
check_bundles_connected ();
}
changed (IOChange (IOChange::ConnectionsChanged), src); /* EMIT SIGNAL */
return 0;
}
/** Caller must hold process lock */
int
IO::ensure_ports_locked (ChanCount count, bool clear, bool& changed)
{
assert (!AudioEngine::instance()->process_lock().trylock());
boost::shared_ptr<Port> port;
changed = false;
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
const size_t n = count.get(*t);
/* remove unused ports */
for (size_t i = n_ports().get(*t); i > n; --i) {
port = _ports.port(*t, i-1);
assert(port);
_ports.remove(port);
_session.engine().unregister_port (port);
changed = true;
}
/* create any necessary new ports */
while (n_ports().get(*t) < n) {
string portname = build_legal_port_name (*t);
try {
if (_direction == Input) {
if ((port = _session.engine().register_input_port (*t, portname)) == 0) {
error << string_compose(_("IO: cannot register input port %1"), portname) << endmsg;
return -1;
}
} else {
if ((port = _session.engine().register_output_port (*t, portname)) == 0) {
error << string_compose(_("IO: cannot register output port %1"), portname) << endmsg;
return -1;
}
}
}
catch (AudioEngine::PortRegistrationFailure& err) {
/* pass it on */
throw;
}
_ports.add (port);
changed = true;
}
}
if (changed) {
check_bundles_connected ();
PortCountChanged (n_ports()); /* EMIT SIGNAL */
_session.set_dirty ();
}
if (clear) {
/* disconnect all existing ports so that we get a fresh start */
for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) {
i->disconnect_all ();
}
}
return 0;
}
/** Caller must hold process lock */
int
IO::ensure_ports (ChanCount count, bool clear, void* src)
{
assert (!AudioEngine::instance()->process_lock().trylock());
bool changed = false;
if (count == n_ports() && !clear) {
return 0;
}
IOChange change;
change.before = _ports.count ();
{
Glib::Threads::Mutex::Lock im (io_lock);
if (ensure_ports_locked (count, clear, changed)) {
return -1;
}
}
if (changed) {
change.after = _ports.count ();
change.type = IOChange::ConfigurationChanged;
this->changed (change, src); /* EMIT SIGNAL */
_buffers.attach_buffers (_ports);
setup_bundle ();
_session.set_dirty ();
}
return 0;
}
/** Caller must hold process lock */
int
IO::ensure_io (ChanCount count, bool clear, void* src)
{
assert (!AudioEngine::instance()->process_lock().trylock());
return ensure_ports (count, clear, src);
}
XMLNode&
IO::get_state ()
{
return state (true);
}
XMLNode&
IO::state (bool /*full_state*/)
{
XMLNode* node = new XMLNode (state_node_name);
char buf[64];
string str;
vector<string>::iterator ci;
int n;
LocaleGuard lg (X_("POSIX"));
Glib::Threads::Mutex::Lock lm (io_lock);
node->add_property("name", _name);
id().print (buf, sizeof (buf));
node->add_property("id", buf);
node->add_property ("direction", enum_2_string (_direction));
node->add_property ("default-type", _default_type.to_string());
for (std::vector<UserBundleInfo*>::iterator i = _bundles_connected.begin(); i != _bundles_connected.end(); ++i) {
XMLNode* n = new XMLNode ("Bundle");
n->add_property ("name", (*i)->bundle->name ());
node->add_child_nocopy (*n);
}
for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) {
vector<string> connections;
XMLNode* pnode = new XMLNode (X_("Port"));
pnode->add_property (X_("type"), i->type().to_string());
pnode->add_property (X_("name"), i->name());
if (i->get_connections (connections)) {
for (n = 0, ci = connections.begin(); ci != connections.end(); ++ci, ++n) {
/* if its a connection to our own port,
return only the port name, not the
whole thing. this allows connections
to be re-established even when our
client name is different.
*/
XMLNode* cnode = new XMLNode (X_("Connection"));
cnode->add_property (X_("other"), _session.engine().make_port_name_relative (*ci));
pnode->add_child_nocopy (*cnode);
}
}
node->add_child_nocopy (*pnode);
}
snprintf (buf, sizeof (buf), "%" PRId64, _user_latency);
node->add_property (X_("user-latency"), buf);
return *node;
}
int
IO::set_state (const XMLNode& node, int version)
{
/* callers for version < 3000 need to call set_state_2X directly, as A3 IOs
* are input OR output, not both, so the direction needs to be specified
* by the caller.
*/
assert (version >= 3000);
const XMLProperty* prop;
XMLNodeConstIterator iter;
LocaleGuard lg (X_("POSIX"));
/* force use of non-localized representation of decimal point,
since we use it a lot in XML files and so forth.
*/
if (node.name() != state_node_name) {
error << string_compose(_("incorrect XML node \"%1\" passed to IO object"), node.name()) << endmsg;
return -1;
}
if ((prop = node.property ("name")) != 0) {
set_name (prop->value());
}
if ((prop = node.property (X_("default-type"))) != 0) {
_default_type = DataType(prop->value());
assert(_default_type != DataType::NIL);
}
set_id (node);
if ((prop = node.property ("direction")) != 0) {
_direction = (Direction) string_2_enum (prop->value(), _direction);
}
if (create_ports (node, version)) {
return -1;
}
if (connecting_legal) {
if (make_connections (node, version, false)) {
return -1;
}
} else {
pending_state_node = new XMLNode (node);
pending_state_node_version = version;
pending_state_node_in = false;
ConnectingLegal.connect_same_thread (connection_legal_c, boost::bind (&IO::connecting_became_legal, this));
}
if ((prop = node.property ("user-latency")) != 0) {
_user_latency = atoi (prop->value ());
}
return 0;
}
int
IO::set_state_2X (const XMLNode& node, int version, bool in)
{
const XMLProperty* prop;
XMLNodeConstIterator iter;
LocaleGuard lg (X_("POSIX"));
/* force use of non-localized representation of decimal point,
since we use it a lot in XML files and so forth.
*/
if (node.name() != state_node_name) {
error << string_compose(_("incorrect XML node \"%1\" passed to IO object"), node.name()) << endmsg;
return -1;
}
if ((prop = node.property ("name")) != 0) {
set_name (prop->value());
}
if ((prop = node.property (X_("default-type"))) != 0) {
_default_type = DataType(prop->value());
assert(_default_type != DataType::NIL);
}
set_id (node);
_direction = in ? Input : Output;
if (create_ports (node, version)) {
return -1;
}
if (connecting_legal) {
if (make_connections_2X (node, version, in)) {
return -1;
}
} else {
pending_state_node = new XMLNode (node);
pending_state_node_version = version;
pending_state_node_in = in;
ConnectingLegal.connect_same_thread (connection_legal_c, boost::bind (&IO::connecting_became_legal, this));
}
return 0;
}
int
IO::connecting_became_legal ()
{
int ret;
assert (pending_state_node);
connection_legal_c.disconnect ();
ret = make_connections (*pending_state_node, pending_state_node_version, pending_state_node_in);
delete pending_state_node;
pending_state_node = 0;
return ret;
}
boost::shared_ptr<Bundle>
IO::find_possible_bundle (const string &desired_name)
{
static const string digits = "0123456789";
const string &default_name = (_direction == Input ? _("in") : _("out"));
const string &bundle_type_name = (_direction == Input ? _("input") : _("output"));
boost::shared_ptr<Bundle> c = _session.bundle_by_name (desired_name);
if (!c) {
int bundle_number, mask;
string possible_name;
bool stereo = false;
string::size_type last_non_digit_pos;
error << string_compose(_("Unknown bundle \"%1\" listed for %2 of %3"), desired_name, bundle_type_name, _name)
<< endmsg;
// find numeric suffix of desired name
bundle_number = 0;
last_non_digit_pos = desired_name.find_last_not_of(digits);
if (last_non_digit_pos != string::npos) {
stringstream s;
s << desired_name.substr(last_non_digit_pos);
s >> bundle_number;
}
// see if it's a stereo connection e.g. "in 3+4"
if (last_non_digit_pos > 1 && desired_name[last_non_digit_pos] == '+') {
string::size_type left_last_non_digit_pos;
left_last_non_digit_pos = desired_name.find_last_not_of(digits, last_non_digit_pos-1);
if (left_last_non_digit_pos != string::npos) {
int left_bundle_number = 0;
stringstream s;
s << desired_name.substr(left_last_non_digit_pos, last_non_digit_pos-1);
s >> left_bundle_number;
if (left_bundle_number > 0 && left_bundle_number + 1 == bundle_number) {
bundle_number--;
stereo = true;
}
}
}
// make 0-based
if (bundle_number)
bundle_number--;
// find highest set bit
mask = 1;
while ((mask <= bundle_number) && (mask <<= 1)) {}
// "wrap" bundle number into largest possible power of 2
// that works...
while (mask) {
if (bundle_number & mask) {
bundle_number &= ~mask;
stringstream s;
s << default_name << " " << bundle_number + 1;
if (stereo) {
s << "+" << bundle_number + 2;
}
possible_name = s.str();
if ((c = _session.bundle_by_name (possible_name)) != 0) {
break;
}
}
mask >>= 1;
}
if (c) {
info << string_compose (_("Bundle %1 was not available - \"%2\" used instead"), desired_name, possible_name)
<< endmsg;
} else {
error << string_compose(_("No %1 bundles available as a replacement"), bundle_type_name)
<< endmsg;
}
}
return c;
}
int
IO::get_port_counts_2X (XMLNode const & node, int /*version*/, ChanCount& n, boost::shared_ptr<Bundle>& /*c*/)
{
XMLProperty const * prop;
XMLNodeList children = node.children ();
uint32_t n_audio = 0;
for (XMLNodeIterator i = children.begin(); i != children.end(); ++i) {
if ((prop = node.property ("inputs")) != 0 && _direction == Input) {
n_audio = count (prop->value().begin(), prop->value().end(), '{');
} else if ((prop = node.property ("input-connection")) != 0 && _direction == Input) {
n_audio = 1;
} else if ((prop = node.property ("outputs")) != 0 && _direction == Output) {
n_audio = count (prop->value().begin(), prop->value().end(), '{');
} else if ((prop = node.property ("output-connection")) != 0 && _direction == Output) {
n_audio = 2;
}
}
ChanCount cnt;
cnt.set_audio (n_audio);
n = ChanCount::max (n, cnt);
return 0;
}
int
IO::get_port_counts (const XMLNode& node, int version, ChanCount& n, boost::shared_ptr<Bundle>& c)
{
if (version < 3000) {
return get_port_counts_2X (node, version, n, c);
}
XMLProperty const * prop;
XMLNodeConstIterator iter;
uint32_t n_audio = 0;
uint32_t n_midi = 0;
ChanCount cnt;
n = n_ports();
if ((prop = node.property ("connection")) != 0) {
if ((c = find_possible_bundle (prop->value())) != 0) {
n = ChanCount::max (n, c->nchannels());
}
return 0;
}
for (iter = node.children().begin(); iter != node.children().end(); ++iter) {
if ((*iter)->name() == X_("Bundle")) {
if ((c = find_possible_bundle (prop->value())) != 0) {
n = ChanCount::max (n, c->nchannels());
return 0;
} else {
return -1;
}
}
if ((*iter)->name() == X_("Port")) {
prop = (*iter)->property (X_("type"));
if (!prop) {
continue;
}
if (prop->value() == X_("audio")) {
cnt.set_audio (++n_audio);
} else if (prop->value() == X_("midi")) {
cnt.set_midi (++n_midi);
}
}
}
n = ChanCount::max (n, cnt);
return 0;
}
int
IO::create_ports (const XMLNode& node, int version)
{
ChanCount n;
boost::shared_ptr<Bundle> c;
get_port_counts (node, version, n, c);
{
Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
if (ensure_ports (n, true, this)) {
error << string_compose(_("%1: cannot create I/O ports"), _name) << endmsg;
return -1;
}
}
/* XXX use c */
return 0;
}
int
IO::make_connections (const XMLNode& node, int version, bool in)
{
if (version < 3000) {
return make_connections_2X (node, version, in);
}
const XMLProperty* prop;
for (XMLNodeConstIterator i = node.children().begin(); i != node.children().end(); ++i) {
if ((*i)->name() == "Bundle") {
XMLProperty const * prop = (*i)->property ("name");
if (prop) {
boost::shared_ptr<Bundle> b = find_possible_bundle (prop->value());
if (b) {
connect_ports_to_bundle (b, true, this);
}
}
return 0;
}
if ((*i)->name() == "Port") {
prop = (*i)->property (X_("name"));
if (!prop) {
continue;
}
boost::shared_ptr<Port> p = port_by_name (prop->value());
if (p) {
for (XMLNodeConstIterator c = (*i)->children().begin(); c != (*i)->children().end(); ++c) {
XMLNode* cnode = (*c);
if (cnode->name() != X_("Connection")) {
continue;
}
if ((prop = cnode->property (X_("other"))) == 0) {
continue;
}
if (prop) {
connect (p, prop->value(), this);
}
}
}
}
}
return 0;
}
void
IO::prepare_for_reset (XMLNode& node, const std::string& name)
{
/* reset name */
node.add_property ("name", name);
/* now find connections and reset the name of the port
in one so that when we re-use it it will match
the name of the thing we're applying it to.
*/
XMLProperty* prop;
XMLNodeList children = node.children();
for (XMLNodeIterator i = children.begin(); i != children.end(); ++i) {
if ((*i)->name() == "Port") {
prop = (*i)->property (X_("name"));
if (prop) {
string new_name;
string old = prop->value();
string::size_type slash = old.find ('/');
if (slash != string::npos) {
/* port name is of form: <IO-name>/<port-name> */
new_name = name;
new_name += old.substr (old.find ('/'));
prop->set_value (new_name);
}
}
}
}
}
int
IO::make_connections_2X (const XMLNode& node, int /*version*/, bool in)
{
const XMLProperty* prop;
/* XXX: bundles ("connections" as was) */
if ((prop = node.property ("inputs")) != 0 && in) {
string::size_type ostart = 0;
string::size_type start = 0;
string::size_type end = 0;
int i = 0;
int n;
vector<string> ports;
string const str = prop->value ();
while ((start = str.find_first_of ('{', ostart)) != string::npos) {
start += 1;
if ((end = str.find_first_of ('}', start)) == string::npos) {
error << string_compose(_("IO: badly formed string in XML node for inputs \"%1\""), str) << endmsg;
return -1;
}
if ((n = parse_io_string (str.substr (start, end - start), ports)) < 0) {
error << string_compose(_("bad input string in XML node \"%1\""), str) << endmsg;
return -1;
} else if (n > 0) {
for (int x = 0; x < n; ++x) {
/* XXX: this is a bit of a hack; need to check if it's always valid */
string::size_type const p = ports[x].find ("/out");
if (p != string::npos) {
ports[x].replace (p, 4, "/audio_out");
}
nth(i)->connect (ports[x]);
}
}
ostart = end+1;
i++;
}
}
if ((prop = node.property ("outputs")) != 0 && !in) {
string::size_type ostart = 0;
string::size_type start = 0;
string::size_type end = 0;
int i = 0;
int n;
vector<string> ports;
string const str = prop->value ();
while ((start = str.find_first_of ('{', ostart)) != string::npos) {
start += 1;
if ((end = str.find_first_of ('}', start)) == string::npos) {
error << string_compose(_("IO: badly formed string in XML node for outputs \"%1\""), str) << endmsg;
return -1;
}
if ((n = parse_io_string (str.substr (start, end - start), ports)) < 0) {
error << string_compose(_("IO: bad output string in XML node \"%1\""), str) << endmsg;
return -1;
} else if (n > 0) {
for (int x = 0; x < n; ++x) {
/* XXX: this is a bit of a hack; need to check if it's always valid */
string::size_type const p = ports[x].find ("/in");
if (p != string::npos) {
ports[x].replace (p, 3, "/audio_in");
}
nth(i)->connect (ports[x]);
}
}
ostart = end+1;
i++;
}
}
return 0;
}
int
IO::set_ports (const string& str)
{
vector<string> ports;
int i;
int n;
uint32_t nports;
if ((nports = count (str.begin(), str.end(), '{')) == 0) {
return 0;
}
{
Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
// FIXME: audio-only
if (ensure_ports (ChanCount(DataType::AUDIO, nports), true, this)) {
return -1;
}
}
string::size_type start, end, ostart;
ostart = 0;
start = 0;
end = 0;
i = 0;
while ((start = str.find_first_of ('{', ostart)) != string::npos) {
start += 1;
if ((end = str.find_first_of ('}', start)) == string::npos) {
error << string_compose(_("IO: badly formed string in XML node for inputs \"%1\""), str) << endmsg;
return -1;
}
if ((n = parse_io_string (str.substr (start, end - start), ports)) < 0) {
error << string_compose(_("bad input string in XML node \"%1\""), str) << endmsg;
return -1;
} else if (n > 0) {
for (int x = 0; x < n; ++x) {
connect (nth (i), ports[x], this);
}
}
ostart = end+1;
i++;
}
return 0;
}
int
IO::parse_io_string (const string& str, vector<string>& ports)
{
string::size_type pos, opos;
if (str.length() == 0) {
return 0;
}
pos = 0;
opos = 0;
ports.clear ();
while ((pos = str.find_first_of (',', opos)) != string::npos) {
ports.push_back (str.substr (opos, pos - opos));
opos = pos + 1;
}
if (opos < str.length()) {
ports.push_back (str.substr(opos));
}
return ports.size();
}
int
IO::parse_gain_string (const string& str, vector<string>& ports)
{
string::size_type pos, opos;
pos = 0;
opos = 0;
ports.clear ();
while ((pos = str.find_first_of (',', opos)) != string::npos) {
ports.push_back (str.substr (opos, pos - opos));
opos = pos + 1;
}
if (opos < str.length()) {
ports.push_back (str.substr(opos));
}
return ports.size();
}
bool
IO::set_name (const string& requested_name)
{
string name = requested_name;
if (_name == name) {
return true;
}
/* replace all colons in the name. i wish we didn't have to do this */
replace_all (name, ":", "-");
for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) {
string current_name = i->name();
current_name.replace (current_name.find (_name), _name.val().length(), name);
i->set_name (current_name);
}
bool const r = SessionObject::set_name (name);
setup_bundle ();
return r;
}
framecnt_t
IO::latency () const
{
framecnt_t max_latency;
framecnt_t latency;
max_latency = 0;
/* io lock not taken - must be protected by other means */
for (PortSet::const_iterator i = _ports.begin(); i != _ports.end(); ++i) {
if ((latency = i->private_latency_range (_direction == Output).max) > max_latency) {
DEBUG_TRACE (DEBUG::Latency, string_compose ("port %1 has %2 latency of %3 - use\n",
name(),
((_direction == Output) ? "PLAYBACK" : "CAPTURE"),
latency));
max_latency = latency;
}
}
DEBUG_TRACE (DEBUG::Latency, string_compose ("%1: max %4 latency from %2 ports = %3\n",
name(), _ports.num_ports(), max_latency,
((_direction == Output) ? "PLAYBACK" : "CAPTURE")));
return max_latency;
}
int
IO::connect_ports_to_bundle (boost::shared_ptr<Bundle> c, bool exclusive, void* src)
{
BLOCK_PROCESS_CALLBACK ();
{
Glib::Threads::Mutex::Lock lm2 (io_lock);
if (exclusive) {
for (PortSet::iterator i = _ports.begin(); i != _ports.end(); ++i) {
i->disconnect_all ();
}
}
c->connect (_bundle, _session.engine());
/* If this is a UserBundle, make a note of what we've done */
boost::shared_ptr<UserBundle> ub = boost::dynamic_pointer_cast<UserBundle> (c);
if (ub) {
/* See if we already know about this one */
std::vector<UserBundleInfo*>::iterator i = _bundles_connected.begin();
while (i != _bundles_connected.end() && (*i)->bundle != ub) {
++i;
}
if (i == _bundles_connected.end()) {
/* We don't, so make a note */
_bundles_connected.push_back (new UserBundleInfo (this, ub));
}
}
}
changed (IOChange (IOChange::ConnectionsChanged), src); /* EMIT SIGNAL */
return 0;
}
int
IO::disconnect_ports_from_bundle (boost::shared_ptr<Bundle> c, void* src)
{
BLOCK_PROCESS_CALLBACK ();
{
Glib::Threads::Mutex::Lock lm2 (io_lock);
c->disconnect (_bundle, _session.engine());
/* If this is a UserBundle, make a note of what we've done */
boost::shared_ptr<UserBundle> ub = boost::dynamic_pointer_cast<UserBundle> (c);
if (ub) {
std::vector<UserBundleInfo*>::iterator i = _bundles_connected.begin();
while (i != _bundles_connected.end() && (*i)->bundle != ub) {
++i;
}
if (i != _bundles_connected.end()) {
delete *i;
_bundles_connected.erase (i);
}
}
}
changed (IOChange (IOChange::ConnectionsChanged), src); /* EMIT SIGNAL */
return 0;
}
int
IO::disable_connecting ()
{
connecting_legal = false;
return 0;
}
int
IO::enable_connecting ()
{
Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock());
connecting_legal = true;
boost::optional<int> r = ConnectingLegal ();
return r.get_value_or (0);
}
void
IO::bundle_changed (Bundle::Change /*c*/)
{
/* XXX */
// connect_input_ports_to_bundle (_input_bundle, this);
}
string
IO::build_legal_port_name (DataType type)
{
const int name_size = AudioEngine::instance()->port_name_size();
int limit;
string suffix;
if (type == DataType::AUDIO) {
suffix = X_("audio");
} else if (type == DataType::MIDI) {
suffix = X_("midi");
} else {
throw unknown_type();
}
/* note that if "in" or "out" are translated it will break a session
across locale switches because a port's connection list will
show (old) translated names, but the current port name will
use the (new) translated name.
*/
if (_sendish) {
if (_direction == Input) {
suffix += X_("_return");
} else {
suffix += X_("_send");
}
} else {
if (_direction == Input) {
suffix += X_("_in");
} else {
suffix += X_("_out");
}
}
// allow up to 4 digits for the output port number, plus the slash, suffix and extra space
limit = name_size - AudioEngine::instance()->my_name().length() - (suffix.length() + 5);
char buf1[name_size+1];
char buf2[name_size+1];
/* colons are illegal in port names, so fix that */
string nom = _name.val();
replace_all (nom, ":", ";");
snprintf (buf1, name_size+1, ("%.*s/%s"), limit, nom.c_str(), suffix.c_str());
int port_number = find_port_hole (buf1);
snprintf (buf2, name_size+1, "%s %d", buf1, port_number);
return string (buf2);
}
int32_t
IO::find_port_hole (const char* base)
{
/* CALLER MUST HOLD IO LOCK */
uint32_t n;
if (_ports.empty()) {
return 1;
}
/* we only allow up to 4 characters for the port number
*/
for (n = 1; n < 9999; ++n) {
size_t size = AudioEngine::instance()->port_name_size() + 1;
char buf[size];
PortSet::iterator i = _ports.begin();
snprintf (buf, size, _("%s %u"), base, n);
for ( ; i != _ports.end(); ++i) {
if (i->name() == buf) {
break;
}
}
if (i == _ports.end()) {
break;
}
}
return n;
}
boost::shared_ptr<AudioPort>
IO::audio(uint32_t n) const
{
return _ports.nth_audio_port (n);
}
boost::shared_ptr<MidiPort>
IO::midi(uint32_t n) const
{
return _ports.nth_midi_port (n);
}
/**
* Setup a bundle that describe our inputs or outputs. Also creates the bundle if necessary.
*/
void
IO::setup_bundle ()
{
char buf[32];
if (!_bundle) {
_bundle.reset (new Bundle (_direction == Input));
}
_bundle->suspend_signals ();
_bundle->remove_channels ();
if (_direction == Input) {
snprintf(buf, sizeof (buf), _("%s in"), _name.val().c_str());
} else {
snprintf(buf, sizeof (buf), _("%s out"), _name.val().c_str());
}
_bundle->set_name (buf);
int c = 0;
for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
uint32_t const N = _ports.count().get (*i);
for (uint32_t j = 0; j < N; ++j) {
_bundle->add_channel (bundle_channel_name (j, N, *i), *i);
_bundle->set_port (c, _session.engine().make_port_name_non_relative (_ports.port(*i, j)->name()));
++c;
}
}
_bundle->resume_signals ();
}
/** @return Bundles connected to our ports */
BundleList
IO::bundles_connected ()
{
BundleList bundles;
/* User bundles */
for (std::vector<UserBundleInfo*>::iterator i = _bundles_connected.begin(); i != _bundles_connected.end(); ++i) {
bundles.push_back ((*i)->bundle);
}
/* Session bundles */
boost::shared_ptr<ARDOUR::BundleList> b = _session.bundles ();
for (ARDOUR::BundleList::iterator i = b->begin(); i != b->end(); ++i) {
if ((*i)->connected_to (_bundle, _session.engine())) {
bundles.push_back (*i);
}
}
/* Route bundles */
boost::shared_ptr<ARDOUR::RouteList> r = _session.get_routes ();
if (_direction == Input) {
for (ARDOUR::RouteList::iterator i = r->begin(); i != r->end(); ++i) {
if ((*i)->output()->bundle()->connected_to (_bundle, _session.engine())) {
bundles.push_back ((*i)->output()->bundle());
}
}
} else {
for (ARDOUR::RouteList::iterator i = r->begin(); i != r->end(); ++i) {
if ((*i)->input()->bundle()->connected_to (_bundle, _session.engine())) {
bundles.push_back ((*i)->input()->bundle());
}
}
}
return bundles;
}
IO::UserBundleInfo::UserBundleInfo (IO* io, boost::shared_ptr<UserBundle> b)
{
bundle = b;
b->Changed.connect_same_thread (changed, boost::bind (&IO::bundle_changed, io, _1));
}
std::string
IO::bundle_channel_name (uint32_t c, uint32_t n, DataType t) const
{
char buf[32];
if (t == DataType::AUDIO) {
switch (n) {
case 1:
return _("mono");
case 2:
return c == 0 ? _("L") : _("R");
default:
snprintf (buf, sizeof(buf), _("%d"), (c + 1));
return buf;
}
} else {
snprintf (buf, sizeof(buf), _("%d"), (c + 1));
return buf;
}
return "";
}
string
IO::name_from_state (const XMLNode& node)
{
const XMLProperty* prop;
if ((prop = node.property ("name")) != 0) {
return prop->value();
}
return string();
}
void
IO::set_name_in_state (XMLNode& node, const string& new_name)
{
node.add_property (X_("name"), new_name);
XMLNodeList children = node.children ();
for (XMLNodeIterator i = children.begin(); i != children.end(); ++i) {
if ((*i)->name() == X_("Port")) {
string const old_name = (*i)->property(X_("name"))->value();
string const old_name_second_part = old_name.substr (old_name.find_first_of ("/") + 1);
(*i)->add_property (X_("name"), string_compose ("%1/%2", new_name, old_name_second_part));
}
}
}
bool
IO::connected () const
{
/* do we have any connections at all? */
for (PortSet::const_iterator p = _ports.begin(); p != _ports.end(); ++p) {
if (p->connected()) {
return true;
}
}
return false;
}
bool
IO::connected_to (boost::shared_ptr<const IO> other) const
{
if (!other) {
return connected ();
}
assert (_direction != other->direction());
uint32_t i, j;
uint32_t no = n_ports().n_total();
uint32_t ni = other->n_ports ().n_total();
for (i = 0; i < no; ++i) {
for (j = 0; j < ni; ++j) {
if (nth(i)->connected_to (other->nth(j)->name())) {
return true;
}
}
}
return false;
}
bool
IO::connected_to (const string& str) const
{
for (PortSet::const_iterator i = _ports.begin(); i != _ports.end(); ++i) {
if (i->connected_to (str)) {
return true;
}
}
return false;
}
/** Call a processor's ::run() method, giving it our buffers
* Caller must hold process lock.
*/
void
IO::process_input (boost::shared_ptr<Processor> proc, framepos_t start_frame, framepos_t end_frame, pframes_t nframes)
{
/* don't read the data into new buffers - just use the port buffers directly */
if (n_ports().n_total() == 0) {
/* We have no ports, so nothing to process */
return;
}
_buffers.get_backend_port_addresses (_ports, nframes);
if (proc) {
proc->run (_buffers, start_frame, end_frame, nframes, true);
}
}
void
IO::collect_input (BufferSet& bufs, pframes_t nframes, ChanCount offset)
{
assert(bufs.available() >= _ports.count());
if (_ports.count() == ChanCount::ZERO) {
return;
}
bufs.set_count (_ports.count());
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
PortSet::iterator i = _ports.begin(*t);
BufferSet::iterator b = bufs.begin(*t);
for (uint32_t off = 0; off < offset.get(*t); ++off, ++b) {
if (b == bufs.end(*t)) {
continue;
}
}
for ( ; i != _ports.end(*t); ++i, ++b) {
Buffer& bb (i->get_buffer (nframes));
b->read_from (bb, nframes);
}
}
}
void
IO::copy_to_outputs (BufferSet& bufs, DataType type, pframes_t nframes, framecnt_t offset)
{
// Copy any buffers 1:1 to outputs
PortSet::iterator o = _ports.begin(type);
BufferSet::iterator i = bufs.begin(type);
BufferSet::iterator prev = i;
while (i != bufs.end(type) && o != _ports.end (type)) {
Buffer& port_buffer (o->get_buffer (nframes));
port_buffer.read_from (*i, nframes, offset);
prev = i;
++i;
++o;
}
// Copy last buffer to any extra outputs
while (o != _ports.end(type)) {
Buffer& port_buffer (o->get_buffer (nframes));
port_buffer.read_from (*prev, nframes, offset);
++o;
}
}
boost::shared_ptr<Port>
IO::port_by_name (const std::string& str) const
{
/* to be called only from ::set_state() - no locking */
for (PortSet::const_iterator i = _ports.begin(); i != _ports.end(); ++i) {
if (i->name() == str) {
return boost::const_pointer_cast<Port> (*i);
}
}
return boost::shared_ptr<Port> ();
}
bool
IO::physically_connected () const
{
for (PortSet::const_iterator i = _ports.begin(); i != _ports.end(); ++i) {
if (i->physically_connected()) {
return true;
}
}
return false;
}
bool
IO::has_port (boost::shared_ptr<Port> p) const
{
Glib::Threads::Mutex::Lock lm (io_lock);
return _ports.contains (p);
}
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