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Diffstat (limited to 'src/engine/events/SetPortValueEvent.cpp')
| -rw-r--r-- | src/engine/events/SetPortValueEvent.cpp | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/engine/events/SetPortValueEvent.cpp b/src/engine/events/SetPortValueEvent.cpp new file mode 100644 index 00000000..a99b9f9a --- /dev/null +++ b/src/engine/events/SetPortValueEvent.cpp @@ -0,0 +1,224 @@ +/* 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 <sstream> +#include <lv2ext/lv2_event.h> +#include "Responder.hpp" +#include "SetPortValueEvent.hpp" +#include "Engine.hpp" +#include "PortImpl.hpp" +#include "ClientBroadcaster.hpp" +#include "NodeImpl.hpp" +#include "EngineStore.hpp" +#include "AudioBuffer.hpp" +#include "EventBuffer.hpp" +#include "ProcessContext.hpp" +#include "MessageContext.hpp" + +using namespace std; + +namespace Ingen { + + +/** Omni (all voices) control setting */ +SetPortValueEvent::SetPortValueEvent(Engine& engine, + SharedPtr<Responder> responder, + bool queued, + SampleCount timestamp, + const string& port_path, + const Raul::Atom& value) + : QueuedEvent(engine, responder, timestamp) + , _queued(queued) + , _omni(true) + , _voice_num(0) + , _port_path(port_path) + , _value(value) + , _port(NULL) + , _error(NO_ERROR) +{ +} + + +/** Voice-specific control setting */ +SetPortValueEvent::SetPortValueEvent(Engine& engine, + SharedPtr<Responder> responder, + bool queued, + SampleCount timestamp, + uint32_t voice_num, + const string& port_path, + const Raul::Atom& value) + : QueuedEvent(engine, responder, timestamp) + , _queued(queued) + , _omni(false) + , _voice_num(voice_num) + , _port_path(port_path) + , _value(value) + , _port(NULL) + , _error(NO_ERROR) +{ +} + + +SetPortValueEvent::~SetPortValueEvent() +{ +} + + +void +SetPortValueEvent::pre_process() +{ + if (_queued) { + if (_port == NULL) { + if (Path::is_valid(_port_path)) + _port = _engine.engine_store()->find_port(_port_path); + else + _error = ILLEGAL_PATH; + } + + if (_port == NULL && _error == NO_ERROR) + _error = PORT_NOT_FOUND; + } + + // Port is a message context port, set its value and + // call the plugin's message run function once + if (_port && _port->context() == Context::MESSAGE) { + _engine.message_context()->run(_port->parent_node()); + } + + QueuedEvent::pre_process(); +} + + +void +SetPortValueEvent::execute(ProcessContext& context) +{ + Event::execute(context); + assert(_time >= context.start() && _time <= context.end()); + + if (_port && _port->context() == Context::MESSAGE) + return; + + if (_error == NO_ERROR && _port == NULL) { + if (Path::is_valid(_port_path)) + _port = _engine.engine_store()->find_port(_port_path); + else + _error = ILLEGAL_PATH; + } + + if (_port == NULL) { + if (_error == NO_ERROR) + _error = PORT_NOT_FOUND; + /*} else if (_port->buffer(0)->capacity() < _data_size) { + _error = NO_SPACE;*/ + } else { + Buffer* const buf = _port->buffer(0); + AudioBuffer* const abuf = dynamic_cast<AudioBuffer*>(buf); + if (abuf) { + if (_value.type() != Atom::FLOAT) { + _error = TYPE_MISMATCH; + return; + } + + if (_omni) { + for (uint32_t i=0; i < _port->poly(); ++i) + ((AudioBuffer*)_port->buffer(i))->set_value( + _value.get_float(), context.start(), _time); + } else { + if (_voice_num < _port->poly()) + ((AudioBuffer*)_port->buffer(_voice_num))->set_value( + _value.get_float(), context.start(), _time); + else + _error = ILLEGAL_VOICE; + } + return; + } + + EventBuffer* const ebuf = dynamic_cast<EventBuffer*>(buf); + + const LV2Features::Feature* f = _engine.world()->lv2_features->feature(LV2_URI_MAP_URI); + LV2URIMap* map = (LV2URIMap*)f->controller; + + // FIXME: eliminate lookups + // FIXME: need a proper prefix system + if (ebuf && _value.type() == Atom::BLOB) { + const uint32_t frames = std::max( + (uint32_t)(_time - context.start()), + ebuf->latest_frames()); + + // Size 0 event, pass it along to the plugin as a typed but empty event + if (_value.data_size() == 0) { + cout << "BANG!" << endl; + const uint32_t type_id = map->uri_to_id(NULL, _value.get_blob_type()); + ebuf->append(frames, 0, type_id, 0, NULL); + _port->raise_set_by_user_flag(); + return; + + } else if (!strcmp(_value.get_blob_type(), "lv2_midi:MidiEvent")) { + const uint32_t type_id = map->uri_to_id(NULL, + "http://lv2plug.in/ns/ext/midi#MidiEvent"); + + ebuf->prepare_write(context.start(), context.nframes()); + // FIXME: use OSC midi type? avoid MIDI over OSC entirely? + ebuf->append(frames, 0, type_id, _value.data_size(), + (const uint8_t*)_value.get_blob()); + _port->raise_set_by_user_flag(); + return; + } + } + + if (_value.type() == Atom::BLOB) + cerr << "WARNING: Unknown value blob type " << _value.get_blob_type() << endl; + else + cerr << "WARNING: Unknown value type " << (int)_value.type() << endl; + } +} + + +void +SetPortValueEvent::post_process() +{ + if (_error == NO_ERROR) { + assert(_port != NULL); + _responder->respond_ok(); + _engine.broadcaster()->send_port_value(_port_path, _value); + + } else if (_error == ILLEGAL_PATH) { + string msg = "Illegal port path \""; + msg.append(_port_path).append("\""); + _responder->respond_error(msg); + + } else if (_error == ILLEGAL_VOICE) { + std::ostringstream ss; + ss << "Illegal voice number " << _voice_num; + _responder->respond_error(ss.str()); + + } else if (_error == PORT_NOT_FOUND) { + string msg = "Unable to find port "; + msg.append(_port_path).append(" for set_port_value"); + _responder->respond_error(msg); + + } else if (_error == NO_SPACE) { + std::ostringstream msg("Attempt to write "); + msg << _value.data_size() << " bytes to " << _port_path << ", with capacity " + << _port->buffer_size() << endl; + _responder->respond_error(msg.str()); + } +} + + +} // namespace Ingen + |