1 files changed, 281 insertions, 0 deletions
diff --git a/src/engine/NodeImpl.cpp b/src/engine/NodeImpl.cpp
new file mode 100644
index 00000000..332b69b2
--- /dev/null
+++ b/src/engine/NodeImpl.cpp
@@ -0,0 +1,281 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2007-2009 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
+ */
+
+#include <cassert>
+#include <stdint.h>
+#include "contexts.lv2/contexts.h"
+#include "raul/List.hpp"
+#include "raul/Array.hpp"
+#include "util.hpp"
+#include "AudioBuffer.hpp"
+#include "ClientBroadcaster.hpp"
+#include "EngineStore.hpp"
+#include "NodeImpl.hpp"
+#include "PatchImpl.hpp"
+#include "PluginImpl.hpp"
+#include "PortImpl.hpp"
+#include "ThreadManager.hpp"
+
+using namespace std;
+
+namespace Ingen {
+
+
+NodeImpl::NodeImpl(PluginImpl* plugin, const Raul::Symbol& symbol, bool polyphonic, PatchImpl* parent, SampleRate srate)
+	: GraphObjectImpl(parent, symbol)
+	, _plugin(plugin)
+	, _polyphonic(polyphonic)
+	, _polyphony((polyphonic && parent) ? parent->internal_poly() : 1)
+	, _srate(srate)
+	, _valid_ports(NULL)
+	, _input_ready(1)
+	, _process_lock(0)
+	, _n_inputs_ready(0)
+	, _ports(NULL)
+	, _providers(new Raul::List<NodeImpl*>())
+	, _dependants(new Raul::List<NodeImpl*>())
+	, _activated(false)
+	, _traversed(false)
+{
+	assert(_plugin);
+	assert(_polyphony > 0);
+	assert(_parent == NULL || (_polyphony == parent->internal_poly() || _polyphony == 1));
+}
+
+
+NodeImpl::~NodeImpl()
+{
+	if (_activated)
+		deactivate();
+
+	delete _providers;
+	delete _dependants;
+	delete _ports;
+
+	free(_valid_ports);
+}
+
+
+Shared::Port*
+NodeImpl::port(uint32_t index) const
+{
+	return (*_ports)[index];
+}
+
+
+const Shared::Plugin*
+NodeImpl::plugin() const
+{
+	return _plugin;
+}
+
+
+void
+NodeImpl::activate(BufferFactory& bufs)
+{
+	ThreadManager::assert_thread(THREAD_PRE_PROCESS);
+	assert(!_activated);
+	_activated = true;
+
+	for (unsigned long p = 0; p < num_ports(); ++p) {
+		PortImpl* const port = _ports->at(p);
+		port->setup_buffers(bufs, port->poly());
+		port->connect_buffers();
+		for (uint32_t v = 0; v < _polyphony; ++v) {
+			if (!port->buffer(v))
+				continue;
+			if (port->is_a(PortType::CONTROL))
+				((AudioBuffer*)port->buffer(v).get())->set_value(port->value().get_float(), 0, 0);
+			else
+				port->buffer(v)->clear();
+		}
+	}
+}
+
+
+void
+NodeImpl::deactivate()
+{
+	assert(_activated);
+	_activated = false;
+	for (uint32_t i = 0; i < _polyphony; ++i) {
+		for (unsigned long j = 0; j < num_ports(); ++j) {
+			PortImpl* const port = _ports->at(j);
+			if (port->is_output() && port->buffer(i))
+				port->buffer(i)->clear();
+		}
+	}
+}
+
+
+bool
+NodeImpl::prepare_poly(BufferFactory& bufs, uint32_t poly)
+{
+	ThreadManager::assert_thread(THREAD_PRE_PROCESS);
+
+	if (!_polyphonic)
+		poly = 1;
+
+	for (size_t i = 0; i < _ports->size(); ++i)
+		_ports->at(i)->prepare_poly(bufs, poly);
+
+	return true;
+}
+
+
+bool
+NodeImpl::apply_poly(Raul::Maid& maid, uint32_t poly)
+{
+	ThreadManager::assert_thread(THREAD_PROCESS);
+
+	if (!_polyphonic)
+		poly = 1;
+
+	_polyphony = poly;
+
+	for (size_t i = 0; i < num_ports(); ++i)
+		_ports->at(i)->apply_poly(maid, poly);
+
+	return true;
+}
+
+
+void
+NodeImpl::set_buffer_size(Context& context, BufferFactory& bufs, PortType type, size_t size)
+{
+	if (_ports)
+		for (size_t i = 0; i < _ports->size(); ++i)
+			if (_ports->at(i)->buffer_type() == type && _ports->at(i)->context() == context.id())
+				_ports->at(i)->set_buffer_size(context, bufs, size);
+}
+
+
+void
+NodeImpl::reset_input_ready()
+{
+	_n_inputs_ready = 0;
+	_process_lock = 0;
+	_input_ready.reset(0);
+}
+
+
+bool
+NodeImpl::process_lock()
+{
+	return _process_lock.compare_and_exchange(0, 1);
+}
+
+
+void
+NodeImpl::process_unlock()
+{
+	_process_lock = 0;
+}
+
+
+void
+NodeImpl::wait_for_input(size_t num_providers)
+{
+	ThreadManager::assert_thread(THREAD_PROCESS);
+	assert(_process_lock.get() == 1);
+
+	while ((unsigned)_n_inputs_ready.get() < num_providers)
+		_input_ready.wait();
+}
+
+
+void
+NodeImpl::signal_input_ready()
+{
+	ThreadManager::assert_thread(THREAD_PROCESS);
+	++_n_inputs_ready;
+	_input_ready.post();
+}
+
+
+/** Prepare to run a cycle (in the audio thread)
+ */
+void
+NodeImpl::pre_process(Context& context)
+{
+	ThreadManager::assert_thread(THREAD_PROCESS);
+
+	// Mix down input ports
+	for (uint32_t i = 0; i < num_ports(); ++i) {
+		PortImpl* const port = _ports->at(i);
+		if (port->context() == Context::AUDIO) {
+			port->pre_process(context);
+			port->connect_buffers(context.offset());
+		}
+	}
+}
+
+
+/** Prepare to run a cycle (in the audio thread)
+ */
+void
+NodeImpl::post_process(Context& context)
+{
+	ThreadManager::assert_thread(THREAD_PROCESS);
+
+	// Write output ports
+	for (size_t i = 0; _ports && i < _ports->size(); ++i) {
+		PortImpl* const port = _ports->at(i);
+		if (port->context() == Context::AUDIO)
+			_ports->at(i)->post_process(context);
+	}
+}
+
+
+/** Flag a port as set (for message context)
+ */
+void
+NodeImpl::set_port_valid(uint32_t port_index)
+{
+	// Allocate enough space for one bit per port
+	if (!_valid_ports)
+		_valid_ports = calloc(num_ports() / 8, 1);
+	lv2_contexts_set_port_valid(_valid_ports, port_index);
+}
+
+
+void*
+NodeImpl::valid_ports()
+{
+	return _valid_ports;
+}
+
+
+void
+NodeImpl::reset_valid_ports()
+{
+	if (_valid_ports)
+		memset(_valid_ports, '\0', num_ports() / 8);
+}
+
+
+void
+NodeImpl::set_port_buffer(uint32_t voice, uint32_t port_num,
+		BufferFactory::Ref buf, SampleCount offset)
+{
+	/*std::cout << path() << " set port " << port_num << " voice " << voice
+			<< " buffer " << buf << " offset " << offset << std::endl;*/
+}
+
+
+} // namespace Ingen
+