libs/ardour/processor.cc

   1 /*
   2     Copyright (C) 2000 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <string>
  21
  22 #include <sigc++/bind.h>
  23
  24 #include "pbd/failed_constructor.h"
  25 #include "pbd/enumwriter.h"
  26 #include "pbd/xml++.h"
  27
  28 #include "ardour/processor.h"
  29 #include "ardour/plugin.h"
  30 #include "ardour/port.h"
  31 #include "ardour/route.h"
  32 #include "ardour/ladspa_plugin.h"
  33 #include "ardour/buffer_set.h"
  34 #include "ardour/send.h"
  35 #include "ardour/port_insert.h"
  36 #include "ardour/plugin_insert.h"
  37
  38 #ifdef VST_SUPPORT
  39 #include "ardour/vst_plugin.h"
  40 #endif
  41
  42 #ifdef HAVE_AUDIOUNITS
  43 #include "ardour/audio_unit.h"
  44 #endif
  45
  46 #include "ardour/audioengine.h"
  47 #include "ardour/session.h"
  48 #include "ardour/types.h"
  49
  50 #include "i18n.h"
  51
  52 using namespace std;
  53 using namespace ARDOUR;
  54 using namespace PBD;
  55
  56 sigc::signal<void,Processor*> Processor::ProcessorCreated;
  57
  58 // Always saved as Processor, but may be IOProcessor or Send in legacy sessions
  59 const string Processor::state_node_name = "Processor";
  60
  61 Processor::Processor(Session& session, const string& name)
  62         : SessionObject(session, name)
  63         , AutomatableControls(session)
  64         , _active(false)
  65         , _next_ab_is_active(false)
  66         , _configured(false)
  67         , _gui(0)
  68 {
  69 }
  70
  71 Processor::Processor (Session& session, const XMLNode& node)
  72         : SessionObject(session, "renameMe")
  73         , AutomatableControls(session)
  74         , _active(false)
  75         , _next_ab_is_active(false)
  76         , _configured(false)
  77         , _gui(0)
  78 {
  79         set_state (node);
  80 }
  81
  82 XMLNode&
  83 Processor::get_state (void)
  84 {
  85         return state (true);
  86 }
  87
  88 /* NODE STRUCTURE
  89
  90     <Automation [optionally with visible="...." ]>
  91        <parameter-N>
  92          <AutomationList id=N>
  93            <events>
  94            X1 Y1
  95            X2 Y2
  96            ....
  97            </events>
  98        </parameter-N>
  99     <Automation>
 100 */
 101
 102 XMLNode&
 103 Processor::state (bool full_state)
 104 {
 105         XMLNode* node = new XMLNode (state_node_name);
 106         stringstream sstr;
 107         char buf[64];
 108
 109         id().print (buf, sizeof (buf));
 110         node->add_property("id", buf);
 111         node->add_property("name", _name);
 112         node->add_property("active", active() ? "yes" : "no");
 113
 114         if (_extra_xml){
 115                 node->add_child_copy (*_extra_xml);
 116         }
 117
 118         if (full_state) {
 119                 XMLNode& automation = Automatable::get_automation_state();
 120                 if (!automation.children().empty()
 121                                 || !automation.properties().empty()
 122                                 || !_visible_controls.empty()) {
 123
 124                         for (set<Evoral::Parameter>::iterator x = _visible_controls.begin();
 125                                         x != _visible_controls.end(); ++x) {
 126                                 if (x != _visible_controls.begin()) {
 127                                         sstr << ' ';
 128                                 }
 129                                 sstr << *x;
 130                         }
 131
 132                         automation.add_property ("visible", sstr.str());
 133                         node->add_child_nocopy (automation);
 134                 }
 135         }
 136
 137         return *node;
 138 }
 139
 140 int
 141 Processor::set_state (const XMLNode& node)
 142 {
 143         const XMLProperty *prop;
 144         const XMLProperty *legacy_active = 0;
 145         const XMLProperty *legacy_placement = 0;
 146
 147         // may not exist for legacy 3.0 sessions
 148         if ((prop = node.property ("name")) != 0) {
 149                 set_name(prop->value());
 150         }
 151
 152         // may not exist for legacy 3.0 sessions
 153         if ((prop = node.property ("id")) != 0) {
 154                 _id = prop->value();
 155         }
 156
 157         XMLNodeList nlist = node.children();
 158         XMLNodeIterator niter;
 159
 160         for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 161
 162                 if ((*niter)->name() == X_("Automation")) {
 163
 164                         XMLProperty *prop;
 165
 166                         if ((prop = (*niter)->property ("path")) != 0) {
 167                                 old_set_automation_state (*(*niter));
 168                         } else {
 169                                 set_automation_state (*(*niter), Evoral::Parameter(PluginAutomation));
 170                         }
 171
 172                         if ((prop = (*niter)->property ("visible")) != 0) {
 173                                 uint32_t what;
 174                                 stringstream sstr;
 175
 176                                 _visible_controls.clear ();
 177
 178                                 sstr << prop->value();
 179                                 while (1) {
 180                                         sstr >> what;
 181                                         if (sstr.fail()) {
 182                                                 break;
 183                                         }
 184                                         // FIXME: other automation types?
 185                                         mark_automation_visible (Evoral::Parameter(PluginAutomation, 0, what), true);
 186                                 }
 187                         }
 188
 189                 } else if ((*niter)->name() == "Extra") {
 190                         _extra_xml = new XMLNode (*(*niter));
 191                 } else if ((*niter)->name() == "Redirect") {
 192                         if ( !(legacy_active = (*niter)->property("active"))) {
 193                                 error << string_compose(_("No %1 property flag in element %2"), "active", (*niter)->name()) << endl;
 194                         }
 195                         if ( !(legacy_placement = (*niter)->property("placement"))) {
 196                                 error << string_compose(_("No %1 property flag in element %2"), "placement", (*niter)->name()) << endl;
 197                         }
 198                 }
 199         }
 200
 201         if ((prop = node.property ("active")) == 0) {
 202                 warning << _("XML node describing a processor is missing the `active' field,"
 203                            "trying legacy active flag from child node") << endmsg;
 204                 if (legacy_active) {
 205                         prop = legacy_active;
 206                 } else {
 207                         error << _("No child node with active property") << endmsg;
 208                         return -1;
 209                 }
 210         }
 211
 212         if (_active != (prop->value() == "yes")) {
 213                 _active = !_active;
 214                 ActiveChanged (); /* EMIT_SIGNAL */
 215         }
 216
 217         return 0;
 218 }
 219
 220 bool
 221 Processor::configure_io (ChanCount in, ChanCount out)
 222 {
 223         /* This class assumes 1:1 input:output.static output stream count.
 224            Derived classes must override and set _configured_output appropriately
 225            if this is not the case
 226         */
 227
 228         _configured_input = in;
 229         _configured_output = out;
 230         _configured = true;
 231
 232         ConfigurationChanged.emit (in, out);
 233
 234         return true;
 235 }