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-rw-r--r--src/engine/PortImpl.cpp190
1 files changed, 190 insertions, 0 deletions
diff --git a/src/engine/PortImpl.cpp b/src/engine/PortImpl.cpp
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+++ b/src/engine/PortImpl.cpp
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+/* 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
+ */
+
+#include <iostream>
+#include <raul/Array.hpp>
+#include <raul/Maid.hpp>
+#include "PortImpl.hpp"
+#include "NodeImpl.hpp"
+#include "interface/DataType.hpp"
+#include "AudioBuffer.hpp"
+#include "EventBuffer.hpp"
+#include "ProcessContext.hpp"
+#include "SendPortActivityEvent.hpp"
+
+using namespace std;
+
+namespace Ingen {
+
+
+PortImpl::PortImpl(NodeImpl* const node,
+ const string& name,
+ uint32_t index,
+ uint32_t poly,
+ DataType type,
+ const Atom& value,
+ size_t buffer_size)
+ : GraphObjectImpl(node, name, (type == DataType::AUDIO || type == DataType::CONTROL))
+ , _index(index)
+ , _poly(poly)
+ , _buffer_size(buffer_size)
+ , _type(type)
+ , _value(value)
+ , _fixed_buffers(false)
+ , _broadcast(false)
+ , _set_by_user(false)
+ , _last_broadcasted_value(_value.type() == Atom::FLOAT ? _value.get_float() : 0.0f) // default?
+ , _context(Context::AUDIO)
+ , _buffers(new Raul::Array<Buffer*>(poly))
+{
+ assert(node != NULL);
+ assert(_poly > 0);
+
+ allocate_buffers();
+ clear_buffers();
+
+ if (node->parent() == NULL)
+ _polyphonic = false;
+ else
+ _polyphonic = true;
+
+ if (type == DataType::EVENT)
+ _broadcast = true; // send activity blips
+
+ assert(_buffers->size() > 0);
+}
+
+
+PortImpl::~PortImpl()
+{
+ for (uint32_t i=0; i < _poly; ++i)
+ delete _buffers->at(i);
+
+ delete _buffers;
+}
+
+
+bool
+PortImpl::set_polyphonic(Raul::Maid& maid, bool p)
+{
+ if (_type == DataType::CONTROL || _type == DataType::AUDIO)
+ return GraphObjectImpl::set_polyphonic(maid, p);
+ else
+ return (!p);
+}
+
+
+bool
+PortImpl::prepare_poly(uint32_t poly)
+{
+ if (!_polyphonic || !_parent->polyphonic())
+ return true;
+
+ /* FIXME: poly never goes down, harsh on memory.. */
+ if (poly > _poly) {
+ _prepared_buffers = new Raul::Array<Buffer*>(poly, *_buffers);
+ for (uint32_t i = _poly; i < _prepared_buffers->size(); ++i)
+ _prepared_buffers->at(i) = Buffer::create(_type, _buffer_size);
+ }
+
+ return true;
+}
+
+
+bool
+PortImpl::apply_poly(Raul::Maid& maid, uint32_t poly)
+{
+ if (!_polyphonic || !_parent->polyphonic())
+ return true;
+
+ assert(poly <= _prepared_buffers->size());
+
+ // Apply a new set of buffers from a preceding call to prepare_poly
+ if (_prepared_buffers && _buffers != _prepared_buffers) {
+ maid.push(_buffers);
+ _buffers = _prepared_buffers;
+ }
+
+ _poly = poly;
+ assert(_buffers->size() >= poly);
+ assert(this->poly() == poly);
+
+ return true;
+}
+
+
+void
+PortImpl::allocate_buffers()
+{
+ _buffers->alloc(_poly);
+
+ for (uint32_t i=0; i < _poly; ++i)
+ _buffers->at(i) = Buffer::create(_type, _buffer_size);
+}
+
+
+void
+PortImpl::set_buffer_size(size_t size)
+{
+ _buffer_size = size;
+
+ for (uint32_t i=0; i < _poly; ++i)
+ _buffers->at(i)->resize(size);
+
+ connect_buffers();
+}
+
+
+void
+PortImpl::connect_buffers()
+{
+ for (uint32_t i=0; i < _poly; ++i)
+ PortImpl::parent_node()->set_port_buffer(i, _index, buffer(i));
+}
+
+
+void
+PortImpl::clear_buffers()
+{
+ for (uint32_t i=0; i < _poly; ++i)
+ buffer(i)->clear();
+}
+
+
+void
+PortImpl::broadcast(ProcessContext& context)
+{
+ if (_broadcast) {
+ if (_type == DataType::CONTROL || _type == DataType::AUDIO) {
+ const Sample value = ((AudioBuffer*)buffer(0))->value_at(0);
+ if (value != _last_broadcasted_value) {
+ const SendPortValueEvent ev(context.engine(), context.start(), this, false, 0, value);
+ context.event_sink().write(sizeof(ev), &ev);
+ _last_broadcasted_value = value;
+ }
+ } else if (_type == DataType::EVENT) {
+ if (((EventBuffer*)buffer(0))->event_count() > 0) {
+ const SendPortActivityEvent ev(context.engine(), context.start(), this);
+ context.event_sink().write(sizeof(ev), &ev);
+ }
+ }
+ }
+}
+
+
+
+} // namespace Ingen