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Diffstat (limited to 'flow/stereoeffectstack_impl.cc')
| -rw-r--r-- | flow/stereoeffectstack_impl.cc | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/flow/stereoeffectstack_impl.cc b/flow/stereoeffectstack_impl.cc new file mode 100644 index 0000000..3e82cfb --- /dev/null +++ b/flow/stereoeffectstack_impl.cc @@ -0,0 +1,179 @@ + /* + + Copyright (C) 2000 Stefan Westerfeld + stefan@space.twc.de + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + */ + +#include "artsflow.h" +#include "flowsystem.h" +#include "stdsynthmodule.h" +#include "debug.h" +#include <iostream> + +using namespace std; +using namespace Arts; + +namespace Arts { + +class StereoEffectStack_impl : public StereoEffectStack_skel, + public StdSynthModule +{ + long nextID; + + struct EffectEntry { + StereoEffect effect; + string name; + long id; + }; + list<EffectEntry *> fx; + + void xconnect(bool connect, Object from, string fromP, Object to, string toP) + { + if(connect) + from._node()->connect(fromP,to._node(),toP); + else + from._node()->disconnect(fromP,to._node(),toP); + } + void xvirtualize(bool connect, string myPort, Object impl, string implPort) + { + if(connect) + _node()->virtualize(myPort,impl._node(),implPort); + else + _node()->devirtualize(myPort,impl._node(),implPort); + } + void internalconnect(bool c) + { + if(fx.empty()) + { + /* no effects - forward input through to output */ + xvirtualize(c,"outleft",Object::_from_base(this->_copy()),"inleft"); + xvirtualize(c,"outright",Object::_from_base(this->_copy()),"inright"); + } + else + { + list<EffectEntry *>::iterator ei; + EffectEntry *laste = 0; + + long count = 0; + for(ei = fx.begin(); ei != fx.end(); ei++, count++) + { + EffectEntry *e = *ei; + if(count == 0) /* top of chain? virtualize to effect */ + { + xvirtualize(c,"inleft",e->effect,"inleft"); + xvirtualize(c,"inright",e->effect,"inright"); + } + else /* not top? connect last effect to current effect */ + { + xconnect(c,laste->effect,"outleft",e->effect,"inleft"); + xconnect(c,laste->effect,"outright",e->effect,"inright"); + } + laste = e; + } + /* end: virtualize effect output to our output */ + xvirtualize(c,"outleft",laste->effect,"outleft"); + xvirtualize(c,"outright",laste->effect,"outright"); + } + } + void disconnect() { internalconnect(false); } + void reconnect() { internalconnect(true); } +public: + StereoEffectStack_impl() : nextID(1) + { + reconnect(); + } + ~StereoEffectStack_impl() + { + // disconnect remaining effects + EffectEntry *laste = 0; + list<EffectEntry *>::iterator ei; + + for(ei = fx.begin(); ei != fx.end(); ei++) + { + EffectEntry *e = *ei; + if(laste) + { + xconnect(false,laste->effect,"outleft",e->effect,"inleft"); + xconnect(false,laste->effect,"outright",e->effect,"inright"); + } + laste = e; + } + // delete remaining effect entries + for(ei = fx.begin(); ei != fx.end(); ei++) + delete *ei; + fx.clear(); + } + long insertTop(StereoEffect effect, const string& name) + { + arts_return_val_if_fail(!effect.isNull(),0); + + disconnect(); + EffectEntry *e = new EffectEntry(); + e->effect = effect; + e->name = name; + e->id = nextID++; + fx.push_front(e); + reconnect(); + return e->id; + } + long insertBottom(StereoEffect effect, const string& name) + { + arts_return_val_if_fail(!effect.isNull(),0); + + disconnect(); + EffectEntry *e = new EffectEntry(); + e->effect = effect; + e->name = name; + e->id = nextID++; + fx.push_back(e); + reconnect(); + return e->id; + } + + void remove(long ID) + { + arts_return_if_fail(ID != 0); + + bool found = false; + disconnect(); + list<EffectEntry *>::iterator ei = fx.begin(); + + while(ei != fx.end()) + { + if((*ei)->id == ID) { + found = true; + delete (*ei); + fx.erase(ei); + ei = fx.begin(); + } + else ei++; + } + if(!found) { + arts_warning("StereoEffectStack::remove failed. id %d not found?", + ID); + } + reconnect(); + } + + AutoSuspendState autoSuspend() { return asSuspend; } +}; + +REGISTER_IMPLEMENTATION(StereoEffectStack_impl); + +} |