X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fport.cc;h=3473b73617a84226bb442a1bc421bc717fc1ce57;hb=5e1cfcc7ed557fc28ca8b362deceefa1967ab22b;hp=9cbdd14172d48519776b3efe2b2d6bc22c5abfe8;hpb=576cdb08b5eab456eea91263fac1709dd7931a9d;p=ardour.git diff --git a/libs/ardour/port.cc b/libs/ardour/port.cc index 9cbdd14172..3473b73617 100644 --- a/libs/ardour/port.cc +++ b/libs/ardour/port.cc @@ -21,45 +21,76 @@ #include "libardour-config.h" #endif -#include "ardour/port.h" -#include "ardour/audioengine.h" -#include "pbd/failed_constructor.h" -#include "pbd/error.h" +#include // so that we can test for new functions at runtime + #include "pbd/compose.h" -#include +#include "pbd/error.h" +#include "pbd/failed_constructor.h" + +#include "ardour/audioengine.h" +#include "ardour/debug.h" +#include "ardour/port.h" #include "i18n.h" using namespace std; using namespace ARDOUR; +using namespace PBD; + +PBD::Signal2, boost::shared_ptr > Port::PostDisconnect; +PBD::Signal0 Port::PortDrop; AudioEngine* Port::_engine = 0; -nframes_t Port::_port_offset = 0; -nframes_t Port::_buffer_size = 0; +bool Port::_connecting_blocked = false; +pframes_t Port::_global_port_buffer_offset = 0; +pframes_t Port::_cycle_nframes = 0; /** @param n Port short name */ Port::Port (std::string const & n, DataType t, Flags f) - : _last_monitor (false) + : _port_buffer_offset (0) , _name (n) , _flags (f) + , _last_monitor (false) { - - /* Unfortunately we have to pass the DataType into this constructor so that we can - create the right kind of JACK port; aside from this we'll use the virtual function type () - to establish type. + _private_playback_latency.min = 0; + _private_playback_latency.max = 0; + _private_capture_latency.min = 0; + _private_capture_latency.max = 0; + + /* Unfortunately we have to pass the DataType into this constructor so that + we can create the right kind of JACK port; aside from this we'll use the + virtual function type () to establish type. */ assert (_name.find_first_of (':') == std::string::npos); + if (!_engine->connected()) { + throw failed_constructor (); + } + if ((_jack_port = jack_port_register (_engine->jack (), _name.c_str (), t.to_jack_type (), _flags, 0)) == 0) { + cerr << "Failed to register JACK port \"" << _name << "\", reason is unknown from here\n"; throw failed_constructor (); } + + PortDrop.connect_same_thread (drop_connection, boost::bind (&Port::drop, this)); } /** Port destructor */ Port::~Port () { - jack_port_unregister (_engine->jack (), _jack_port); + drop (); +} + +void +Port::drop () +{ + if (_jack_port) { + if (_engine->jack ()) { + jack_port_unregister (_engine->jack (), _jack_port); + } + _jack_port = 0; + } } /** @return true if this port is connected to anything */ @@ -75,6 +106,11 @@ Port::disconnect_all () jack_port_disconnect (_engine->jack(), _jack_port); _connections.clear (); + /* a cheaper, less hacky way to do boost::shared_from_this() ... + */ + boost::shared_ptr pself = _engine->get_port_by_name (name()); + PostDisconnect (pself, boost::shared_ptr()); // emit signal + return 0; } @@ -84,7 +120,16 @@ Port::disconnect_all () bool Port::connected_to (std::string const & o) const { - return jack_port_connected_to (_jack_port, _engine->make_port_name_non_relative(o).c_str ()); + if (!_engine->connected()) { + /* in some senses, this answer isn't the right one all the time, + because we know about our connections and will re-establish + them when we reconnect to JACK. + */ + return false; + } + + return jack_port_connected_to (_jack_port, + _engine->make_port_name_non_relative(o).c_str ()); } /** @param o Filled in with port full names of ports that we are connected to */ @@ -93,14 +138,20 @@ Port::get_connections (std::vector & c) const { int n = 0; - const char** jc = jack_port_get_connections (_jack_port); - if (jc) { - for (int i = 0; jc[i]; ++i) { - c.push_back (jc[i]); - ++n; - } + if (_engine->connected()) { + const char** jc = jack_port_get_connections (_jack_port); + if (jc) { + for (int i = 0; jc[i]; ++i) { + c.push_back (jc[i]); + ++n; + } - jack_free (jc); + if (jack_free) { + jack_free (jc); + } else { + free (jc); + } + } } return n; @@ -109,13 +160,15 @@ Port::get_connections (std::vector & c) const int Port::connect (std::string const & other) { - /* caller must hold process lock */ - std::string const other_shrt = _engine->make_port_name_non_relative (other); std::string const this_shrt = _engine->make_port_name_non_relative (_name); int r = 0; + if (_connecting_blocked) { + return r; + } + if (sends_output ()) { r = jack_connect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ()); } else { @@ -132,24 +185,35 @@ Port::connect (std::string const & other) int Port::disconnect (std::string const & other) { - /* caller must hold process lock */ - - std::string const other_shrt = _engine->make_port_name_non_relative (other); - std::string const this_shrt = _engine->make_port_name_non_relative (_name); + std::string const other_fullname = _engine->make_port_name_non_relative (other); + std::string const this_fullname = _engine->make_port_name_non_relative (_name); int r = 0; if (sends_output ()) { - r = jack_disconnect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ()); + r = jack_disconnect (_engine->jack (), this_fullname.c_str (), other_fullname.c_str ()); } else { - r = jack_disconnect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str ()); + r = jack_disconnect (_engine->jack (), other_fullname.c_str (), this_fullname.c_str ()); } if (r == 0) { _connections.erase (other); } - return r; + /* a cheaper, less hacky way to do boost::shared_from_this() ... + */ + boost::shared_ptr pself = _engine->get_port_by_name (name()); + boost::shared_ptr pother = _engine->get_port_by_name (other); + + if (pself && pother) { + /* Disconnecting from another Ardour port: need to allow + a check on whether this may affect anything that we + need to know about. + */ + PostDisconnect (pself, pother); // emit signal + } + + return r; } @@ -178,13 +242,13 @@ Port::set_engine (AudioEngine* e) } void -Port::ensure_monitor_input (bool yn) +Port::ensure_jack_monitors_input (bool yn) { jack_port_ensure_monitor (_jack_port, yn); } bool -Port::monitoring_input () const +Port::jack_monitoring_input () const { return jack_port_monitoring_input (_jack_port); } @@ -193,36 +257,182 @@ void Port::reset () { _last_monitor = false; +} - // XXX - // _metering = 0; - // reset_meters (); +void +Port::cycle_start (pframes_t) +{ + _port_buffer_offset = 0; } void -Port::recompute_total_latency () const +Port::increment_port_buffer_offset (pframes_t nframes) { -#ifdef HAVE_JACK_RECOMPUTE_LATENCY - jack_client_t* jack = _engine->jack(); + _port_buffer_offset += nframes; +} - if (!jack) { +void +Port::set_public_latency_range (jack_latency_range_t& range, bool playback) const +{ + /* this sets the visible latency that the rest of JACK sees. because we do latency + compensation, all (most) of our visible port latency values are identical. + */ + + if (!jack_port_set_latency_range) { return; } - jack_recompute_total_latency (jack, _jack_port); -#endif + DEBUG_TRACE (DEBUG::Latency, + string_compose ("SET PORT %1 %4 PUBLIC latency now [%2 - %3]\n", + name(), range.min, range.max, + (playback ? "PLAYBACK" : "CAPTURE")));; + + jack_port_set_latency_range (_jack_port, + (playback ? JackPlaybackLatency : JackCaptureLatency), + &range); } -nframes_t -Port::total_latency () const +void +Port::set_private_latency_range (jack_latency_range_t& range, bool playback) +{ + if (playback) { + _private_playback_latency = range; + DEBUG_TRACE (DEBUG::Latency, string_compose ( + "SET PORT %1 playback PRIVATE latency now [%2 - %3]\n", + name(), + _private_playback_latency.min, + _private_playback_latency.max)); + } else { + _private_capture_latency = range; + DEBUG_TRACE (DEBUG::Latency, string_compose ( + "SET PORT %1 capture PRIVATE latency now [%2 - %3]\n", + name(), + _private_capture_latency.min, + _private_capture_latency.max)); + } + + /* push to public (JACK) location so that everyone else can see it */ + + set_public_latency_range (range, playback); +} + +const jack_latency_range_t& +Port::private_latency_range (bool playback) const { + if (playback) { + DEBUG_TRACE (DEBUG::Latency, string_compose ( + "GET PORT %1 playback PRIVATE latency now [%2 - %3]\n", + name(), + _private_playback_latency.min, + _private_playback_latency.max)); + return _private_playback_latency; + } else { + DEBUG_TRACE (DEBUG::Latency, string_compose ( + "GET PORT %1 capture PRIVATE latency now [%2 - %3]\n", + name(), + _private_playback_latency.min, + _private_playback_latency.max)); + return _private_capture_latency; + } +} + +jack_latency_range_t +Port::public_latency_range (bool /*playback*/) const +{ + jack_latency_range_t r; + + jack_port_get_latency_range (_jack_port, + sends_output() ? JackPlaybackLatency : JackCaptureLatency, + &r); + DEBUG_TRACE (DEBUG::Latency, string_compose ( + "GET PORT %1: %4 PUBLIC latency range %2 .. %3\n", + name(), r.min, r.max, + sends_output() ? "PLAYBACK" : "CAPTURE")); + return r; +} + +void +Port::get_connected_latency_range (jack_latency_range_t& range, bool playback) const +{ + if (!jack_port_get_latency_range) { + return; + } + + vector connections; jack_client_t* jack = _engine->jack(); if (!jack) { - return 0; + range.min = 0; + range.max = 0; + PBD::warning << _("get_connected_latency_range() called while disconnected from JACK") << endmsg; + return; } - return jack_port_get_total_latency (jack, _jack_port); + get_connections (connections); + + if (!connections.empty()) { + + range.min = ~((jack_nframes_t) 0); + range.max = 0; + + DEBUG_TRACE (DEBUG::Latency, string_compose ("%1: %2 connections to check for latency range\n", name(), connections.size())); + + for (vector::const_iterator c = connections.begin(); + c != connections.end(); ++c) { + + jack_latency_range_t lr; + + if (!AudioEngine::instance()->port_is_mine (*c)) { + + /* port belongs to some other JACK client, use + * JACK to lookup its latency information. + */ + + jack_port_t* remote_port = jack_port_by_name (_engine->jack(), (*c).c_str()); + + if (remote_port) { + jack_port_get_latency_range ( + remote_port, + (playback ? JackPlaybackLatency : JackCaptureLatency), + &lr); + + DEBUG_TRACE (DEBUG::Latency, string_compose ( + "\t%1 <-> %2 : latter has latency range %3 .. %4\n", + name(), *c, lr.min, lr.max)); + + range.min = min (range.min, lr.min); + range.max = max (range.max, lr.max); + } + + } else { + + /* port belongs to this instance of ardour, + so look up its latency information + internally, because our published/public + values already contain our plugin + latency compensation. + */ + + boost::shared_ptr remote_port = AudioEngine::instance()->get_port_by_name (*c); + if (remote_port) { + lr = remote_port->private_latency_range ((playback ? JackPlaybackLatency : JackCaptureLatency)); + DEBUG_TRACE (DEBUG::Latency, string_compose ( + "\t%1 <-LOCAL-> %2 : latter has latency range %3 .. %4\n", + name(), *c, lr.min, lr.max)); + + range.min = min (range.min, lr.min); + range.max = max (range.max, lr.max); + } + } + } + + } else { + DEBUG_TRACE (DEBUG::Latency, string_compose ("%1: not connected to anything\n", name())); + range.min = 0; + range.max = 0; + } + + DEBUG_TRACE (DEBUG::Latency, string_compose ("%1: final connected latency range [ %2 .. %3 ] \n", name(), range.min, range.max)); } int @@ -234,7 +444,6 @@ Port::reestablish () return -1; } - cerr << "RE-REGISTER: " << _name.c_str() << endl; _jack_port = jack_port_register (jack, _name.c_str(), type().to_jack_type(), _flags, 0); if (_jack_port == 0) { @@ -273,24 +482,20 @@ Port::set_name (std::string const & n) int const r = jack_port_set_name (_jack_port, n.c_str()); if (r == 0) { + _engine->port_renamed (_name, n); _name = n; } + return r; } void -Port::request_monitor_input (bool yn) +Port::request_jack_monitors_input (bool yn) { jack_port_request_monitor (_jack_port, yn); } -void -Port::set_latency (nframes_t n) -{ - jack_port_set_latency (_jack_port, n); -} - bool Port::physically_connected () const { @@ -299,16 +504,24 @@ Port::physically_connected () const if (jc) { for (int i = 0; jc[i]; ++i) { - jack_port_t* port = jack_port_by_name (_engine->jack(), jc[i]); - - if (port && (jack_port_flags (port) & JackPortIsPhysical)) { - jack_free (jc); - return true; - } + jack_port_t* port = jack_port_by_name (_engine->jack(), jc[i]); + + if (port && (jack_port_flags (port) & JackPortIsPhysical)) { + if (jack_free) { + jack_free (jc); + } else { + free (jc); + } + return true; + } } - - jack_free (jc); + if (jack_free) { + jack_free (jc); + } else { + free (jc); + } } - return false; + return false; } +