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Diffstat (limited to 'src/engine/NodeBase.hpp')
-rw-r--r-- | src/engine/NodeBase.hpp | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/engine/NodeBase.hpp b/src/engine/NodeBase.hpp new file mode 100644 index 00000000..e3710aa9 --- /dev/null +++ b/src/engine/NodeBase.hpp @@ -0,0 +1,132 @@ +/* This file is part of Ingen. + * Copyright (C) 2007 Dave Robillard <http://drobilla.net> + * + * Ingen 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. + * + * Ingen 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 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., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef NODEBASE_H +#define NODEBASE_H + +#include "types.hpp" +#include <string> +#include <cstdlib> +#include <raul/Semaphore.hpp> +#include <raul/AtomicInt.hpp> +#include "interface/Port.hpp" +#include "NodeImpl.hpp" + +using std::string; + +namespace Ingen { + +class PluginImpl; +class PatchImpl; +class EngineStore; + +namespace Shared { + class ClientInterface; +} using Shared::ClientInterface; + + +/** Common implementation stuff for Node. + * + * Pretty much just attributes and getters/setters are here. + * + * \ingroup engine + */ +class NodeBase : public NodeImpl +{ +public: + NodeBase(PluginImpl* plugin, + const string& name, + bool poly, + PatchImpl* parent, + SampleRate rate, + size_t buffer_size); + + virtual ~NodeBase(); + + virtual void activate(); + virtual void deactivate(); + bool activated() { return _activated; } + + virtual bool prepare_poly(uint32_t poly); + virtual bool apply_poly(Raul::Maid& maid, uint32_t poly); + + virtual void reset_input_ready(); + virtual bool process_lock(); + virtual void process_unlock(); + virtual void wait_for_input(size_t num_providers); + virtual unsigned n_inputs_ready() const { return _n_inputs_ready.get(); } + + virtual void message_process(MessageContext& context, uint32_t* output) {} + + virtual void pre_process(ProcessContext& context); + virtual void process(ProcessContext& context) = 0; + virtual void post_process(ProcessContext& context); + + virtual void set_port_buffer(uint32_t voice, uint32_t port_num, Buffer* buf) {} + + virtual void set_buffer_size(size_t size); + + SampleRate sample_rate() const { return _srate; } + size_t buffer_size() const { return _buffer_size; } + uint32_t num_ports() const { return _ports ? _ports->size() : 0; } + uint32_t polyphony() const { return _polyphony; } + bool traversed() const { return _traversed; } + void traversed(bool b) { _traversed = b; } + + virtual Port* port(uint32_t index) const; + virtual PortImpl* port_impl(uint32_t index) const { return (*_ports)[index]; } + + /* These are NOT to be used in the audio thread! + * The providers and dependants in CompiledNode are for that + */ + + Raul::List<NodeImpl*>* providers() { return _providers; } + void providers(Raul::List<NodeImpl*>* l) { _providers = l; } + + Raul::List<NodeImpl*>* dependants() { return _dependants; } + void dependants(Raul::List<NodeImpl*>* l) { _dependants = l; } + + virtual const Plugin* plugin() const; + virtual PluginImpl* plugin_impl() const { return _plugin; } + virtual void plugin(PluginImpl* pi) { _plugin = pi; } + + /** A node's parent is always a patch, so static cast should be safe */ + inline PatchImpl* parent_patch() const { return (PatchImpl*)_parent; } + +protected: + virtual void signal_input_ready(); + + PluginImpl* _plugin; + + uint32_t _polyphony; + SampleRate _srate; + size_t _buffer_size; + bool _activated; + + bool _traversed; ///< Flag for process order algorithm + Raul::Semaphore _input_ready; ///< Parallelism: input ready signal + Raul::AtomicInt _process_lock; ///< Parallelism: Waiting on inputs 'lock' + Raul::AtomicInt _n_inputs_ready; ///< Parallelism: # input ready signals this cycle + Raul::Array<PortImpl*>* _ports; ///< Access in audio thread only + Raul::List<NodeImpl*>* _providers; ///< Nodes connected to this one's input ports + Raul::List<NodeImpl*>* _dependants; ///< Nodes this one's output ports are connected to +}; + + +} // namespace Ingen + +#endif // NODEBASE_H |