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Diffstat (limited to 'src/libs/engine/TransportNode.cpp')
| -rw-r--r-- | src/libs/engine/TransportNode.cpp | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/libs/engine/TransportNode.cpp b/src/libs/engine/TransportNode.cpp new file mode 100644 index 00000000..f5183d56 --- /dev/null +++ b/src/libs/engine/TransportNode.cpp @@ -0,0 +1,155 @@ +/* This file is part of Om. Copyright (C) 2006 Dave Robillard. + * + * Om 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. + * + * Om 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., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#include "TransportNode.h" +#include <jack/transport.h> +#include "OutputPort.h" +#include "Plugin.h" +#include "JackAudioDriver.h" +#include "Port.h" +#include "util.h" +#include "Om.h" +#include "OmApp.h" +#include "PortInfo.h" + +namespace Om { + + +TransportNode::TransportNode(const string& path, size_t poly, Patch* parent, samplerate srate, size_t buffer_size) +: InternalNode(path, 1, parent, srate, buffer_size) +{ + m_num_ports = 10; + m_ports.alloc(m_num_ports); + + OutputPort<sample>* spb_port = new OutputPort<sample>(this, "Seconds per Beat", 0, 1, + new PortInfo("Seconds per Beat", CONTROL, OUTPUT, 0, 0, 1), 1); + m_ports.at(0) = spb_port; + + OutputPort<sample>* bpb_port = new OutputPort<sample>(this, "Beats per Bar", 1, 1, + new PortInfo("Beats per Bar", CONTROL, OUTPUT, 0, 0, 1), 1); + m_ports.at(1) = bpb_port; + + OutputPort<sample>* bar_port = new OutputPort<sample>(this, "Bar", 3, 1, + new PortInfo("Bar", CONTROL, OUTPUT, 0, 0, 1), buffer_size); + m_ports.at(2) = bar_port; + + OutputPort<sample>* beat_port = new OutputPort<sample>(this, "Beat", 3, 1, + new PortInfo("Beat", CONTROL, OUTPUT, 0, 0, 1), buffer_size); + m_ports.at(3) = beat_port; + + OutputPort<sample>* frame_port = new OutputPort<sample>(this, "Frame", 3, 1, + new PortInfo("Frame", CONTROL, OUTPUT, 0, 0, 1), buffer_size); + m_ports.at(4) = frame_port; + + OutputPort<sample>* hour_port = new OutputPort<sample>(this, "Hour", 3, 1, + new PortInfo("Hour", CONTROL, OUTPUT, 0, 0, 1), buffer_size); + m_ports.at(5) = hour_port; + + OutputPort<sample>* minute_port = new OutputPort<sample>(this, "Minute", 3, 1, + new PortInfo("Minute", CONTROL, OUTPUT, 0, 0, 1), buffer_size); + m_ports.at(6) = minute_port; + + OutputPort<sample>* second_port = new OutputPort<sample>(this, "Second", 3, 1, + new PortInfo("Second", CONTROL, OUTPUT, 0, 0, 1), buffer_size); + m_ports.at(7) = second_port; + + OutputPort<sample>* trg_port = new OutputPort<sample>(this, "Beat Tick", 2, 1, + new PortInfo("Beat Tick", AUDIO, OUTPUT, 0, 0, 1), buffer_size); + m_ports.at(8) = trg_port; + + OutputPort<sample>* bar_trig_port = new OutputPort<sample>(this, "Bar Tick", 3, 1, + new PortInfo("Bar Tick", AUDIO, OUTPUT, 0, 0, 1), buffer_size); + m_ports.at(9) = bar_trig_port; + + m_plugin.type(Plugin::Internal); + m_plugin.plug_label("transport"); + m_plugin.name("Om Transport Node (BROKEN)"); +} + + +void +TransportNode::run(size_t nframes) +{ + NodeBase::run(nframes); +#if 0 + + // FIXME: this will die horribly with any driver other than jack (in theory) + const jack_position_t* const position = ((JackAudioDriver*)om->audio_driver())->position(); + jack_transport_state_t state = ((JackAudioDriver*)om->audio_driver())->transport_state(); + double bpm = position->beats_per_minute; + float bpb = position->beats_per_bar; + float spb = 60.0 / bpm; + + //cerr << "bpm = " << bpm << endl; + //cerr << "spb = " << spb << endl; + + if (position->valid & JackPositionBBT) { + cerr << "bar: " << position->bar << endl; + cerr << "beat: " << position->beat << endl; + cerr << "tick: " << position->tick << endl; + } else { + cerr << "No BBT" << endl; + } + + if (position->valid & JackBBTFrameOffset) { + cerr << "bbt_offset: " << position->bbt_offset << endl; + } else { + cerr << "No BBT offset" << endl; + } + + if (position->valid & JackPositionTimecode) { + double time = position->frame_time; + cerr << "Seconds: " << time << " : " << endl; + /*time /= 60.0; + cerr << "Minutes: " << time << " : "; + time /= 60.0; + cerr << "Hours: " << time << " : ";*/ + } else { + cerr << "No timecode." << endl; + } + + + ((OutputPort<sample>*)m_ports.at(0))->buffer(0)->set(spb, 0, 0); + ((OutputPort<sample>*)m_ports.at(1))->buffer(0)->set(bpb, 0, 0); + + // fill the trigger buffers with zeros + ((OutputPort<sample>*)m_ports.at(2))->buffer(0)->set(0.0f, 0, nframes - 1); + ((OutputPort<sample>*)m_ports.at(3))->buffer(0)->set(0.0f, 0, nframes - 1); + + // if the transport is rolling, add triggers at the right frame positions + if ((position->valid & JackTransportBBT) && (state == JackTransportRolling)) { + double frames_per_beat = position->frame_rate * spb; + double first_beat = (1.0f - position->tick / position->ticks_per_beat) * frames_per_beat; + int first_beat_no = position->beat; + if (first_beat >= frames_per_beat) { + first_beat -= frames_per_beat; + --first_beat_no; + } + for ( ; first_beat < nframes; first_beat += frames_per_beat) { + ((OutputPort<sample>*)m_ports.at(2))->buffer(0)->set(1.0f, size_t(first_beat)); + if (first_beat_no % int(bpb) == 0) { + ((OutputPort<sample>*)m_ports.at(3))->buffer(0)->set(1.0f, size_t(first_beat)); + ++first_beat_no; + } + } + } + #endif +} + + +} // namespace Om + |