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Diffstat (limited to 'src/server/events/Disconnect.cpp')
| -rw-r--r-- | src/server/events/Disconnect.cpp | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/server/events/Disconnect.cpp b/src/server/events/Disconnect.cpp new file mode 100644 index 00000000..4553c8a2 --- /dev/null +++ b/src/server/events/Disconnect.cpp @@ -0,0 +1,224 @@ +/* + 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 <set> + +#include "ingen/Store.hpp" +#include "raul/Maid.hpp" +#include "raul/Path.hpp" + +#include "ArcImpl.hpp" +#include "Broadcaster.hpp" +#include "Buffer.hpp" +#include "DuplexPort.hpp" +#include "Engine.hpp" +#include "GraphImpl.hpp" +#include "InputPort.hpp" +#include "PortImpl.hpp" +#include "PreProcessContext.hpp" +#include "RunContext.hpp" +#include "ThreadManager.hpp" +#include "events/Disconnect.hpp" + +namespace Ingen { +namespace Server { +namespace Events { + +Disconnect::Disconnect(Engine& engine, + SPtr<Interface> client, + SampleCount timestamp, + const Ingen::Disconnect& msg) + : Event(engine, client, msg.seq, timestamp) + , _msg(msg) + , _graph(nullptr) + , _impl(nullptr) +{ +} + +Disconnect::~Disconnect() +{ + delete _impl; +} + +Disconnect::Impl::Impl(Engine& e, + GraphImpl* graph, + PortImpl* t, + InputPort* h) + : _engine(e) + , _tail(t) + , _head(h) + , _arc(graph->remove_arc(_tail, _head)) +{ + ThreadManager::assert_thread(THREAD_PRE_PROCESS); + + BlockImpl* const tail_block = _tail->parent_block(); + BlockImpl* const head_block = _head->parent_block(); + + // Remove tail from head's providers + auto hp = head_block->providers().find(tail_block); + if (hp != head_block->providers().end()) { + head_block->providers().erase(hp); + } + + // Remove head from tail's providers + auto td = tail_block->dependants().find(head_block); + if (td != tail_block->dependants().end()) { + tail_block->dependants().erase(td); + } + + _head->decrement_num_arcs(); + + if (_head->num_arcs() == 0) { + 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()); + + if (_head->is_a(PortType::CONTROL) || + _head->is_a(PortType::CV)) { + // Reset buffer to control value + const float value = _head->value().get<float>(); + for (uint32_t i = 0; i < _voices->size(); ++i) { + Buffer* buf = _voices->at(i).buffer.get(); + buf->set_block(value, 0, e.block_length()); + } + } else { + for (uint32_t i = 0; i < _voices->size(); ++i) { + _voices->at(i).buffer->clear(); + } + } + } + } +} + +bool +Disconnect::pre_process(PreProcessContext& ctx) +{ + std::lock_guard<Store::Mutex> lock(_engine.store()->mutex()); + + if (_msg.tail.parent().parent() != _msg.head.parent().parent() + && _msg.tail.parent() != _msg.head.parent().parent() + && _msg.tail.parent().parent() != _msg.head.parent()) { + return Event::pre_process_done(Status::PARENT_DIFFERS, _msg.head); + } + + PortImpl* tail = dynamic_cast<PortImpl*>(_engine.store()->get(_msg.tail)); + if (!tail) { + return Event::pre_process_done(Status::PORT_NOT_FOUND, _msg.tail); + } + + PortImpl* head = dynamic_cast<PortImpl*>(_engine.store()->get(_msg.head)); + if (!head) { + return Event::pre_process_done(Status::PORT_NOT_FOUND, _msg.head); + } + + BlockImpl* const tail_block = tail->parent_block(); + BlockImpl* const head_block = head->parent_block(); + + 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) { + return Event::pre_process_done(Status::INTERNAL_ERROR, _msg.head); + } else if (!_graph->has_arc(tail, head)) { + return Event::pre_process_done(Status::NOT_FOUND, _msg.head); + } + + if (tail_block == nullptr || head_block == nullptr) { + return Event::pre_process_done(Status::PARENT_NOT_FOUND, _msg.head); + } + + _impl = new Impl(_engine, + _graph, + dynamic_cast<PortImpl*>(tail), + dynamic_cast<InputPort*>(head)); + + _compiled_graph = ctx.maybe_compile(*_engine.maid(), *_graph); + + return Event::pre_process_done(Status::SUCCESS); +} + +bool +Disconnect::Impl::execute(RunContext& context, bool set_head_buffers) +{ + if (!_arc) { + return false; + } + + _head->remove_arc(*_arc.get()); + if (_head->is_driver_port()) { + return true; + } + + if (set_head_buffers) { + if (_voices) { + _head->set_voices(context, std::move(_voices)); + } else { + _head->setup_buffers(context, *_engine.buffer_factory(), _head->poly()); + } + _head->connect_buffers(); + } else { + _head->recycle_buffers(); + } + + return true; +} + +void +Disconnect::execute(RunContext& context) +{ + if (_status == Status::SUCCESS) { + if (_impl->execute(context, true)) { + if (_compiled_graph) { + _graph->set_compiled_graph(std::move(_compiled_graph)); + } + } else { + _status = Status::NOT_FOUND; + } + } +} + +void +Disconnect::post_process() +{ + Broadcaster::Transfer t(*_engine.broadcaster()); + if (respond() == Status::SUCCESS) { + _engine.broadcaster()->message(_msg); + } +} + +void +Disconnect::undo(Interface& target) +{ + target.connect(_msg.tail, _msg.head); +} + +} // namespace Events +} // namespace Server +} // namespace Ingen |