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session_command.cc

/*
    Copyright (C) 2000-2007 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 <ardour/session.h>
#include <ardour/route.h>
#include <pbd/memento_command.h>
#include <ardour/diskstream.h>
#include <ardour/playlist.h>
#include <ardour/audioplaylist.h>
#include <ardour/audio_track.h>
#include <ardour/tempo.h>
#include <ardour/audiosource.h>
#include <ardour/audioregion.h>
#include <pbd/error.h>
#include <pbd/id.h>
#include <pbd/statefuldestructible.h>
#include <pbd/failed_constructor.h>

using namespace PBD;
using namespace ARDOUR;

#include "i18n.h"

void Session::register_with_memento_command_factory(PBD::ID id, PBD::StatefulThingWithGoingAway *ptr)
{
    registry[id] = ptr;
}
    
Command *
Session::memento_command_factory(XMLNode *n)
{
    PBD::ID id;
    XMLNode *before = 0, *after = 0;
    XMLNode *child = 0;

    /* get id */
    id = PBD::ID(n->property("obj_id")->value());

    /* get before/after */

    if (n->name() == "MementoCommand") {
          before = new XMLNode(*n->children().front());
          after = new XMLNode(*n->children().back());
          child = before;
    } else if (n->name() == "MementoUndoCommand") {
          before = new XMLNode(*n->children().front());
          child = before;
    } else if (n->name() == "MementoRedoCommand") {
          after = new XMLNode(*n->children().front());
          child = after;
    } else if (n->name() == "PlaylistCommand") {
          before = new XMLNode(*n->children().front());
          after = new XMLNode(*n->children().back());
          child = before;
    } 
                
    if (!child)
    {
      error << _("Tried to reconstitute a MementoCommand with no contents, failing. id=") << id.to_s() << endmsg;
      return 0;
    }

    /* create command */
    string obj_T = n->property ("type_name")->value();
    if (obj_T == typeid (AudioRegion).name() || obj_T == typeid (Region).name()) {
          if (audio_regions.count(id)) {
                return new MementoCommand<AudioRegion>(*audio_regions[id], before, after);
          }
    } else if (obj_T == typeid (AudioSource).name()) {
          if (audio_sources.count(id))
                return new MementoCommand<AudioSource>(*audio_sources[id], before, after);
    } else if (obj_T == typeid (Location).name()) {
          Location* loc = _locations.get_location_by_id(id);
          if (loc) {
                return new MementoCommand<Location>(*loc, before, after);
          }
    } else if (obj_T == typeid (Locations).name()) {
          return new MementoCommand<Locations>(_locations, before, after);
    } else if (obj_T == typeid (TempoMap).name()) {
          return new MementoCommand<TempoMap>(*_tempo_map, before, after);
    } else if (obj_T == typeid (Playlist).name() || obj_T == typeid (AudioPlaylist).name()) {
          if (boost::shared_ptr<Playlist> pl = playlist_by_name(child->property("name")->value())) {
                return new MementoCommand<Playlist>(*(pl.get()), before, after);
          }
    } else if (obj_T == typeid (Route).name() || obj_T == typeid (AudioTrack).name()) { 
          return new MementoCommand<Route>(*route_by_id(id), before, after);
    } else if (obj_T == typeid (Curve).name() || obj_T == typeid (AutomationList).name()) {
          if (automation_lists.count(id))
                return new MementoCommand<AutomationList>(*automation_lists[id], before, after);
    } else if (registry.count(id)) { // For Editor and AutomationLine which are off-limits here
          return new MementoCommand<PBD::StatefulThingWithGoingAway>(*registry[id], before, after);
    }

    /* we failed */
    error << string_compose (_("could not reconstitute MementoCommand from XMLNode. object type = %1 id = %2"), obj_T, id.to_s()) << endmsg;

    return 0 ;
}

Command *
Session::global_state_command_factory (const XMLNode& node)
{
      const XMLProperty* prop;
      Command* command = 0;

      if ((prop = node.property ("type")) == 0) {
            error << _("GlobalRouteStateCommand has no \"type\" node, ignoring") << endmsg;
            return 0;
      }
      
      try {

            if (prop->value() == "solo") {
                  command = new GlobalSoloStateCommand (*this, node);
            } else if (prop->value() == "mute") {
                  command = new GlobalMuteStateCommand (*this, node);
            } else if (prop->value() == "rec-enable") {
                  command = new GlobalRecordEnableStateCommand (*this, node);
            } else if (prop->value() == "metering") {
                  command = new GlobalMeteringStateCommand (*this, node);
            } else {
                  error << string_compose (_("unknown type of GlobalRouteStateCommand (%1), ignored"), prop->value()) << endmsg;
            }
      }

      catch (failed_constructor& err) {
            return 0;
      }

      return command;
}

Session::GlobalRouteStateCommand::GlobalRouteStateCommand (Session& s, void* p)
      : sess (s), src (p)
{
}

Session::GlobalRouteStateCommand::GlobalRouteStateCommand (Session& s, const XMLNode& node)
      : sess (s), src (this)
{
      if (set_state (node)) {
            throw failed_constructor ();
      }
}

int
Session::GlobalRouteStateCommand::set_state (const XMLNode& node)
{
      GlobalRouteBooleanState states;
      XMLNodeList nlist;
      const XMLProperty* prop;
      XMLNode* child;
      XMLNodeConstIterator niter;
      int loop;

      before.clear ();
      after.clear ();
      
      for (loop = 0; loop < 2; ++loop) {

            const char *str;

            if (loop) {
                  str = "after";
            } else {
                  str = "before";
            }
            
            if ((child = node.child (str)) == 0) {
                  warning << string_compose (_("global route state command has no \"%1\" node, ignoring entire command"), str) << endmsg;
                  return -1;
            }

            nlist = child->children();

            for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
                  
                  RouteBooleanState rbs;
                  boost::shared_ptr<Route> route;
                  ID id;
                  
                  prop = (*niter)->property ("id");
                  id = prop->value ();
                  
                  if ((route = sess.route_by_id (id)) == 0) {
                        warning << string_compose (_("cannot find track/bus \"%1\" while rebuilding a global route state command, ignored"), id.to_s()) << endmsg;
                        continue;
                  }
                  
                  rbs.first = boost::weak_ptr<Route> (route);
                  
                  prop = (*niter)->property ("yn");
                  rbs.second = (prop->value() == "1");
                  
                  if (loop) {
                        after.push_back (rbs);
                  } else {
                        before.push_back (rbs);
                  }
            }
      }

      return 0;
}

XMLNode&
Session::GlobalRouteStateCommand::get_state ()
{
      XMLNode* node = new XMLNode (X_("GlobalRouteStateCommand"));
      XMLNode* nbefore = new XMLNode (X_("before"));
      XMLNode* nafter = new XMLNode (X_("after"));

      for (Session::GlobalRouteBooleanState::iterator x = before.begin(); x != before.end(); ++x) {
            XMLNode* child = new XMLNode ("s");
            boost::shared_ptr<Route> r = x->first.lock();

            if (r) {
                  child->add_property (X_("id"), r->id().to_s());
                  child->add_property (X_("yn"), (x->second ? "1" : "0"));
                  nbefore->add_child_nocopy (*child);
            }
      }

      for (Session::GlobalRouteBooleanState::iterator x = after.begin(); x != after.end(); ++x) {
            XMLNode* child = new XMLNode ("s");
            boost::shared_ptr<Route> r = x->first.lock();

            if (r) {
                  child->add_property (X_("id"), r->id().to_s());
                  child->add_property (X_("yn"), (x->second ? "1" : "0"));
                  nafter->add_child_nocopy (*child);
            }
      }

      node->add_child_nocopy (*nbefore);
      node->add_child_nocopy (*nafter);

      return *node;
}

// solo

Session::GlobalSoloStateCommand::GlobalSoloStateCommand(Session &sess, void *src)
      : GlobalRouteStateCommand (sess, src)
{
    after = before = sess.get_global_route_boolean(&Route::soloed);
}

Session::GlobalSoloStateCommand::GlobalSoloStateCommand (Session& sess, const XMLNode& node)
      : Session::GlobalRouteStateCommand (sess, node)
{
}

void 
Session::GlobalSoloStateCommand::mark()
{
    after = sess.get_global_route_boolean(&Route::soloed);
}

void 
Session::GlobalSoloStateCommand::operator()()
{
    sess.set_global_solo(after, src);
}

void 
Session::GlobalSoloStateCommand::undo()
{
    sess.set_global_solo(before, src);
}

XMLNode&
Session::GlobalSoloStateCommand::get_state()
{
      XMLNode& node = GlobalRouteStateCommand::get_state();
      node.add_property ("type", "solo");
      return node;
}

// mute
Session::GlobalMuteStateCommand::GlobalMuteStateCommand(Session &sess, void *src)
      : GlobalRouteStateCommand (sess, src)
{
    after = before = sess.get_global_route_boolean(&Route::muted);
}

Session::GlobalMuteStateCommand::GlobalMuteStateCommand (Session& sess, const XMLNode& node)
      : Session::GlobalRouteStateCommand (sess, node)
{
}

void 
Session::GlobalMuteStateCommand::mark()
{
      after = sess.get_global_route_boolean(&Route::muted);
}

void 
Session::GlobalMuteStateCommand::operator()()
{
      sess.set_global_mute(after, src);
}

void 
Session::GlobalMuteStateCommand::undo()
{
      sess.set_global_mute(before, src);
}

XMLNode&
Session::GlobalMuteStateCommand::get_state()
{
      XMLNode& node = GlobalRouteStateCommand::get_state();
      node.add_property ("type", "mute");
      return node;
}

// record enable
Session::GlobalRecordEnableStateCommand::GlobalRecordEnableStateCommand(Session &sess, void *src) 
      : GlobalRouteStateCommand (sess, src)
{
      after = before = sess.get_global_route_boolean(&Route::record_enabled);
}

Session::GlobalRecordEnableStateCommand::GlobalRecordEnableStateCommand (Session& sess, const XMLNode& node)
      : Session::GlobalRouteStateCommand (sess, node)
{
}

void 
Session::GlobalRecordEnableStateCommand::mark()
{
      after = sess.get_global_route_boolean(&Route::record_enabled);
}

void 
Session::GlobalRecordEnableStateCommand::operator()()
{
      sess.set_global_record_enable(after, src);
}

void 
Session::GlobalRecordEnableStateCommand::undo()
{
      sess.set_global_record_enable(before, src);
}

XMLNode& 
Session::GlobalRecordEnableStateCommand::get_state()
{
      XMLNode& node = GlobalRouteStateCommand::get_state();
      node.add_property ("type", "rec-enable");
      return node;
}

// metering
Session::GlobalMeteringStateCommand::GlobalMeteringStateCommand(Session &s, void *p) 
      : sess (s), src (p)
{
      after = before = sess.get_global_route_metering();
}

Session::GlobalMeteringStateCommand::GlobalMeteringStateCommand (Session& s, const XMLNode& node)
      : sess (s), src (this)
{
      if (set_state (node)) {
            throw failed_constructor();
      }
}

void 
Session::GlobalMeteringStateCommand::mark()
{
      after = sess.get_global_route_metering();
}

void 
Session::GlobalMeteringStateCommand::operator()()
{
      sess.set_global_route_metering(after, src);
}

void 
Session::GlobalMeteringStateCommand::undo()
{
      sess.set_global_route_metering(before, src);
}

XMLNode&
Session::GlobalMeteringStateCommand::get_state()
{
      XMLNode* node = new XMLNode (X_("GlobalRouteStateCommand"));
      XMLNode* nbefore = new XMLNode (X_("before"));
      XMLNode* nafter = new XMLNode (X_("after"));

      for (Session::GlobalRouteMeterState::iterator x = before.begin(); x != before.end(); ++x) {
            XMLNode* child = new XMLNode ("s");
            boost::shared_ptr<Route> r = x->first.lock();

            if (r) {
                  child->add_property (X_("id"), r->id().to_s());

                  const char* meterstr = 0;
                  
                  switch (x->second) {
                  case MeterInput:
                        meterstr = X_("input");
                        break;
                  case MeterPreFader:
                        meterstr = X_("pre");
                        break;
                  case MeterPostFader:
                        meterstr = X_("post");
                        break;
                  default:
                        fatal << string_compose (_("programming error: %1") , "no meter state in Session::GlobalMeteringStateCommand::get_state") << endmsg;
                  }

                  child->add_property (X_("meter"), meterstr);
                  nbefore->add_child_nocopy (*child);
            }
      }

      for (Session::GlobalRouteMeterState::iterator x = after.begin(); x != after.end(); ++x) {
            XMLNode* child = new XMLNode ("s");
            boost::shared_ptr<Route> r = x->first.lock();

            if (r) {
                  child->add_property (X_("id"), r->id().to_s());

                  const char* meterstr;
                  
                  switch (x->second) {
                  case MeterInput:
                        meterstr = X_("input");
                        break;
                  case MeterPreFader:
                        meterstr = X_("pre");
                        break;
                  case MeterPostFader:
                        meterstr = X_("post");
                        break;
                  default: meterstr = "";
                  }

                  child->add_property (X_("meter"), meterstr);
                  nafter->add_child_nocopy (*child);
            }
      }

      node->add_child_nocopy (*nbefore);
      node->add_child_nocopy (*nafter);

      node->add_property ("type", "metering");

      return *node;
}

int
Session::GlobalMeteringStateCommand::set_state (const XMLNode& node)
{
      GlobalRouteBooleanState states;
      XMLNodeList nlist;
      const XMLProperty* prop;
      XMLNode* child;
      XMLNodeConstIterator niter;
      int loop;

      before.clear ();
      after.clear ();
      
      for (loop = 0; loop < 2; ++loop) {

            const char *str;

            if (loop) {
                  str = "after";
            } else {
                  str = "before";
            }
            
            if ((child = node.child (str)) == 0) {
                  warning << string_compose (_("global route meter state command has no \"%1\" node, ignoring entire command"), str) << endmsg;
                  return -1;
            }

            nlist = child->children();

            for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
                  
                  RouteMeterState rms;
                  boost::shared_ptr<Route> route;
                  ID id;
                  
                  prop = (*niter)->property ("id");
                  id = prop->value ();
                  
                  if ((route = sess.route_by_id (id)) == 0) {
                        warning << string_compose (_("cannot find track/bus \"%1\" while rebuilding a global route state command, ignored"), id.to_s()) << endmsg;
                        continue;
                  }
                  
                  rms.first = boost::weak_ptr<Route> (route);
                  
                  prop = (*niter)->property ("meter");

                  if (prop->value() == X_("pre")) {
                        rms.second = MeterPreFader;
                  } else if (prop->value() == X_("post")) {
                        rms.second = MeterPostFader;
                  } else {
                        rms.second = MeterInput;
                  }
                  
                  if (loop) {
                        after.push_back (rms);
                  } else {
                        before.push_back (rms);
                  }
            }
      }

      return 0;
}

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