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Diffstat (limited to 'src/server/events/Connect.cpp')
| -rw-r--r-- | src/server/events/Connect.cpp | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/server/events/Connect.cpp b/src/server/events/Connect.cpp new file mode 100644 index 00000000..8937b327 --- /dev/null +++ b/src/server/events/Connect.cpp @@ -0,0 +1,188 @@ +/* + This file is part of Ingen. + Copyright 2007-2016 David Robillard <http://drobilla.net/> + + Ingen is free software: you can redistribute it and/or modify it under the + terms of the GNU Affero General Public License as published by the Free + Software Foundation, either version 3 of the License, or 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 Affero General Public License for details. + + You should have received a copy of the GNU Affero General Public License + along with Ingen. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "ingen/Store.hpp" +#include "raul/Maid.hpp" +#include "raul/Path.hpp" + +#include "ArcImpl.hpp" +#include "Broadcaster.hpp" +#include "BufferFactory.hpp" +#include "Connect.hpp" +#include "Engine.hpp" +#include "GraphImpl.hpp" +#include "InputPort.hpp" +#include "PortImpl.hpp" +#include "PreProcessContext.hpp" +#include "internals/BlockDelay.hpp" +#include "types.hpp" + +namespace Ingen { +namespace Server { +namespace Events { + +Connect::Connect(Engine& engine, + SPtr<Interface> client, + SampleCount timestamp, + const Ingen::Connect& msg) + : Event(engine, client, msg.seq, timestamp) + , _msg(msg) + , _graph(nullptr) + , _head(nullptr) +{} + +bool +Connect::pre_process(PreProcessContext& ctx) +{ + std::lock_guard<Store::Mutex> lock(_engine.store()->mutex()); + + Node* tail = _engine.store()->get(_msg.tail); + if (!tail) { + return Event::pre_process_done(Status::NOT_FOUND, _msg.tail); + } + + Node* head = _engine.store()->get(_msg.head); + if (!head) { + return Event::pre_process_done(Status::NOT_FOUND, _msg.head); + } + + PortImpl* tail_output = dynamic_cast<PortImpl*>(tail); + _head = dynamic_cast<InputPort*>(head); + if (!tail_output || !_head) { + return Event::pre_process_done(Status::BAD_REQUEST, _msg.head); + } + + BlockImpl* const tail_block = tail_output->parent_block(); + BlockImpl* const head_block = _head->parent_block(); + if (!tail_block || !head_block) { + return Event::pre_process_done(Status::PARENT_NOT_FOUND, _msg.head); + } + + if (tail_block->parent() != head_block->parent() + && tail_block != head_block->parent() + && tail_block->parent() != head_block) { + return Event::pre_process_done(Status::PARENT_DIFFERS, _msg.head); + } + + if (!ArcImpl::can_connect(tail_output, _head)) { + return Event::pre_process_done(Status::TYPE_MISMATCH, _msg.head); + } + + if (tail_block->parent_graph() != head_block->parent_graph()) { + // Arc to a graph port from inside the graph + assert(tail_block->parent() == head_block || head_block->parent() == tail_block); + if (tail_block->parent() == head_block) { + _graph = dynamic_cast<GraphImpl*>(head_block); + } else { + _graph = dynamic_cast<GraphImpl*>(tail_block); + } + } else if (tail_block == head_block && dynamic_cast<GraphImpl*>(tail_block)) { + // Arc from a graph input to a graph output (pass through) + _graph = dynamic_cast<GraphImpl*>(tail_block); + } else { + // Normal arc between blocks with the same parent + _graph = tail_block->parent_graph(); + } + + if (_graph->has_arc(tail_output, _head)) { + return Event::pre_process_done(Status::EXISTS, _msg.head); + } + + _arc = SPtr<ArcImpl>(new ArcImpl(tail_output, _head)); + + /* Need to be careful about graph port arcs here and adding a + block's parent as a dependant/provider, or adding a graph as its own + provider... + */ + if (tail_block != head_block && tail_block->parent() == head_block->parent()) { + // Connection is between blocks inside a graph, compile graph + + // The tail block is now a dependency (provider) of the head block + head_block->providers().insert(tail_block); + + if (!dynamic_cast<Internals::BlockDelayNode*>(tail_block)) { + /* Arcs leaving a delay node are ignored for the purposes of + compilation, since the output is from the previous cycle and + does not affect execution order. Otherwise, the head block is + now a dependant of the head block. */ + tail_block->dependants().insert(head_block); + } + + if (ctx.must_compile(*_graph)) { + if (!(_compiled_graph = compile(*_engine.maid(), *_graph))) { + head_block->providers().erase(tail_block); + tail_block->dependants().erase(head_block); + return Event::pre_process_done(Status::COMPILATION_FAILED); + } + } + } + + _graph->add_arc(_arc); + _head->increment_num_arcs(); + + if (!_head->is_driver_port()) { + BufferFactory& bufs = *_engine.buffer_factory(); + _voices = bufs.maid().make_managed<PortImpl::Voices>(_head->poly()); + _head->pre_get_buffers(bufs, _voices, _head->poly()); + } + + tail_output->inherit_neighbour(_head, _tail_remove, _tail_add); + _head->inherit_neighbour(tail_output, _head_remove, _head_add); + + return Event::pre_process_done(Status::SUCCESS); +} + +void +Connect::execute(RunContext& context) +{ + if (_status == Status::SUCCESS) { + _head->add_arc(context, *_arc.get()); + if (!_head->is_driver_port()) { + _head->set_voices(context, std::move(_voices)); + } + _head->connect_buffers(); + if (_compiled_graph) { + _graph->set_compiled_graph(std::move(_compiled_graph)); + } + } +} + +void +Connect::post_process() +{ + Broadcaster::Transfer t(*_engine.broadcaster()); + if (respond() == Status::SUCCESS) { + _engine.broadcaster()->message(_msg); + if (!_tail_remove.empty() || !_tail_add.empty()) { + _engine.broadcaster()->delta( + path_to_uri(_msg.tail), _tail_remove, _tail_add); + } + if (!_tail_remove.empty() || !_tail_add.empty()) { + _engine.broadcaster()->delta( + path_to_uri(_msg.tail), _tail_remove, _tail_add); + } + } +} + +void +Connect::undo(Interface& target) +{ + target.disconnect(_msg.tail, _msg.head); +} + +} // namespace Events +} // namespace Server +} // namespace Ingen |