better error message if VST SDK is not installed and neeed
[ardour.git] / libs / ardour / io.cc
index 6cc279a046ffa7d496aa022f26ce077674dcad11..77f3a33ff2cc74e9ba16368f2e5cec6dd62f702b 100644 (file)
@@ -58,6 +58,7 @@ using namespace std;
 using namespace ARDOUR;
 using namespace PBD;
 
+nframes_t    IO::_automation_interval = 0;
 const string IO::state_node_name = "IO";
 bool         IO::connecting_legal = false;
 bool         IO::ports_legal = false;
@@ -124,6 +125,8 @@ IO::IO (Session& s, string name,
        apply_gain_automation = false;
        _ignore_gain_on_deliver = false;
        
+       last_automation_snapshot = 0;
+
        _gain_automation_state = Off;
        _gain_automation_style = Absolute;
 
@@ -137,6 +140,37 @@ IO::IO (Session& s, string name,
        _session.add_controllable (&_gain_control);
 }
 
+IO::IO (Session& s, const XMLNode& node, DataType dt)
+       : _session (s),
+         _default_type (dt),
+         _gain_control (X_("gaincontrol"), *this),
+         _gain_automation_curve (0, 0, 0) // all reset in set_state()
+{
+       _panner = 0;
+       deferred_state = 0;
+       no_panner_reset = false;
+       _desired_gain = 1.0;
+       _gain = 1.0;
+       _input_connection = 0;
+       _output_connection = 0;
+       _ninputs = 0;
+       _noutputs = 0;
+
+       apply_gain_automation = false;
+       _ignore_gain_on_deliver = false;
+
+       set_state (node);
+
+       {
+               // IO::Meter is emitted from another thread so the
+               // Meter signal must be protected.
+               Glib::Mutex::Lock guard (m_meter_signal_lock);
+               m_meter_connection = Meter.connect (mem_fun (*this, &IO::meter));
+       }
+
+       _session.add_controllable (&_gain_control);
+}
+
 IO::~IO ()
 {
        Glib::Mutex::Lock guard (m_meter_signal_lock);
@@ -479,13 +513,21 @@ IO::deliver_output_no_pan (vector<Sample *>& bufs, uint32_t nbufs, nframes_t nfr
                dst = (*o)->get_buffer (nframes) + offset;
                src = bufs[min(nbufs,i)];
 
-               if (dg != _gain || actual_gain == 1.0f) {
-                       memcpy (dst, src, sizeof (Sample) * nframes);
-               } else if (actual_gain == 0.0f) {
-                       memset (dst, 0, sizeof (Sample) * nframes);
-               } else {
+               if (_name == "Audio 2") {
                        for (nframes_t x = 0; x < nframes; ++x) {
-                               dst[x] = src[x] * actual_gain;
+                               dst[x] = 0.7;
+                       }
+
+               } else {
+                       
+                       if (dg != _gain || actual_gain == 1.0f) {
+                               memcpy (dst, src, sizeof (Sample) * nframes);
+                       } else if (actual_gain == 0.0f) {
+                               memset (dst, 0, sizeof (Sample) * nframes);
+                       } else {
+                               for (nframes_t x = 0; x < nframes; ++x) {
+                                       dst[x] = src[x] * actual_gain;
+                               }
                        }
                }
                
@@ -1390,6 +1432,7 @@ int
 IO::panners_became_legal ()
 {
        _panner->reset (_noutputs, pans_required());
+       _panner->load (); // automation
        panner_legal_c.disconnect ();
        return 0;
 }
@@ -1535,15 +1578,9 @@ IO::state (bool full_state)
                snprintf (buf, sizeof (buf), "0x%x", ARDOUR::Off); 
        }
 
-       node->add_property ("automation-state", buf);
-       snprintf (buf, sizeof (buf), "0x%x", (int) _gain_automation_curve.automation_style());
-       node->add_property ("automation-style", buf);
-
        return *node;
 }
 
-
-
 int
 IO::set_state (const XMLNode& node)
 {
@@ -1582,9 +1619,16 @@ IO::set_state (const XMLNode& node)
                _gain = _desired_gain;
        }
 
+       if ((prop = node.property ("automation-state")) != 0 || (prop = node.property ("automation-style")) != 0) {
+               /* old school automation handling */
+       }
+
        for (iter = node.children().begin(); iter != node.children().end(); ++iter) {
 
                if ((*iter)->name() == "Panner") {
+                       if (_panner == 0) {
+                               _panner = new Panner (_name, _session);
+                       }
                        _panner->set_state (**iter);
                }
 
@@ -1598,20 +1642,6 @@ IO::set_state (const XMLNode& node)
                }
        }
 
-       if ((prop = node.property ("automation-state")) != 0) {
-
-               long int x;
-               x = strtol (prop->value().c_str(), 0, 16);
-               set_gain_automation_state (AutoState (x));
-       }
-
-       if ((prop = node.property ("automation-style")) != 0) {
-
-              long int x;
-               x = strtol (prop->value().c_str(), 0, 16);
-               set_gain_automation_style (AutoStyle (x));
-       }
-       
        if (ports_legal) {
 
                if (create_ports (node)) {
@@ -1644,6 +1674,8 @@ IO::set_state (const XMLNode& node)
                pending_state_node = new XMLNode (node);
        }
 
+       last_automation_snapshot = 0;
+
        return 0;
 }
 
@@ -1659,6 +1691,84 @@ IO::get_automation_state ()
        return (_gain_automation_curve.get_state ());
 }
 
+int
+IO::load_automation (string path)
+{
+       string fullpath;
+       ifstream in;
+       char line[128];
+       uint32_t linecnt = 0;
+       float version;
+       LocaleGuard lg (X_("POSIX"));
+
+       fullpath = _session.automation_dir();
+       fullpath += path;
+
+       in.open (fullpath.c_str());
+
+       if (!in) {
+               fullpath = _session.automation_dir();
+               fullpath += _session.snap_name();
+               fullpath += '-';
+               fullpath += path;
+
+               in.open (fullpath.c_str());
+
+               if (!in) {
+                       error << string_compose(_("%1: cannot open automation event file \"%2\""), _name, fullpath) << endmsg;
+                       return -1;
+               }
+       }
+
+       clear_automation ();
+
+       while (in.getline (line, sizeof(line), '\n')) {
+               char type;
+               jack_nframes_t when;
+               double value;
+
+               if (++linecnt == 1) {
+                       if (memcmp (line, "version", 7) == 0) {
+                               if (sscanf (line, "version %f", &version) != 1) {
+                                       error << string_compose(_("badly formed version number in automation event file \"%1\""), path) << endmsg;
+                                       return -1;
+                               }
+                       } else {
+                               error << string_compose(_("no version information in automation event file \"%1\""), path) << endmsg;
+                               return -1;
+                       }
+
+                       continue;
+               }
+
+               if (sscanf (line, "%c %" PRIu32 " %lf", &type, &when, &value) != 3) {
+                       warning << string_compose(_("badly formatted automation event record at line %1 of %2 (ignored)"), linecnt, path) << endmsg;
+                       continue;
+               }
+
+               switch (type) {
+               case 'g':
+                       _gain_automation_curve.fast_simple_add (when, value);
+                       break;
+
+               case 's':
+                       break;
+
+               case 'm':
+                       break;
+
+               case 'p':
+                       /* older (pre-1.0) versions of ardour used this */
+                       break;
+
+               default:
+                       warning << _("dubious automation event found (and ignored)") << endmsg;
+               }
+       }
+
+       return 0;
+}
+
 int
 IO::connecting_became_legal ()
 {
@@ -2398,6 +2508,7 @@ IO::set_gain_automation_state (AutoState state)
 
                if (state != _gain_automation_curve.automation_state()) {
                        changed = true;
+                       last_automation_snapshot = 0;
                        _gain_automation_curve.set_automation_state (state);
                        
                        if (state != Off) {
@@ -2495,6 +2606,21 @@ IO::end_pan_touch (uint32_t which)
 
 }
 
+void
+IO::automation_snapshot (nframes_t now)
+{
+       if (last_automation_snapshot > now || (now - last_automation_snapshot) > _automation_interval) {
+
+               if (gain_automation_recording()) {
+                       _gain_automation_curve.rt_add (now, gain());
+               }
+               
+               _panner->snapshot (now);
+
+               last_automation_snapshot = now;
+       }
+}
+
 void
 IO::transport_stopped (nframes_t frame)
 {