32d2e2eaac
git-svn-id: svn://localhost/ardour2/branches/3.0@7149 d708f5d6-7413-0410-9779-e7cbd77b26cf
305 lines
7.9 KiB
C++
305 lines
7.9 KiB
C++
/*
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Copyright (C) 2006 Paul Davis
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Written by Dave Robillard, 2006
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <float.h>
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#include <cerrno>
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#include <ctime>
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#include <cmath>
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#include <iomanip>
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#include <algorithm>
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#include <glibmm/fileutils.h>
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#include "pbd/xml++.h"
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#include "pbd/pthread_utils.h"
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#include "pbd/basename.h"
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#include "ardour/audioengine.h"
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#include "ardour/debug.h"
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#include "ardour/midi_model.h"
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#include "ardour/midi_ring_buffer.h"
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#include "ardour/midi_state_tracker.h"
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#include "ardour/midi_source.h"
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#include "ardour/session.h"
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#include "ardour/session_directory.h"
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#include "ardour/source_factory.h"
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#include "ardour/tempo.h"
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#include "i18n.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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PBD::Signal1<void,MidiSource*> MidiSource::MidiSourceCreated;
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MidiSource::MidiSource (Session& s, string name, Source::Flag flags)
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: Source(s, DataType::MIDI, name, flags)
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, _read_data_count(0)
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, _write_data_count(0)
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, _writing(false)
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, _model_iter_valid(false)
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, _length_beats(0.0)
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, _last_read_end(0)
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, _last_write_end(0)
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{
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}
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MidiSource::MidiSource (Session& s, const XMLNode& node)
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: Source(s, node)
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, _read_data_count(0)
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, _write_data_count(0)
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, _writing(false)
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, _model_iter_valid(false)
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, _length_beats(0.0)
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, _last_read_end(0)
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, _last_write_end(0)
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{
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_read_data_count = 0;
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_write_data_count = 0;
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if (set_state (node, Stateful::loading_state_version)) {
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throw failed_constructor();
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}
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}
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MidiSource::~MidiSource ()
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{
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}
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XMLNode&
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MidiSource::get_state ()
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{
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XMLNode& node (Source::get_state());
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if (_captured_for.length()) {
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node.add_property ("captured-for", _captured_for);
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}
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return node;
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}
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int
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MidiSource::set_state (const XMLNode& node, int /*version*/)
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{
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const XMLProperty* prop;
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if ((prop = node.property ("captured-for")) != 0) {
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_captured_for = prop->value();
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}
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return 0;
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}
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sframes_t
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MidiSource::length (sframes_t pos) const
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{
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BeatsFramesConverter converter(_session.tempo_map(), pos);
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return converter.to(_length_beats);
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}
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void
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MidiSource::update_length (sframes_t /*pos*/, sframes_t /*cnt*/)
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{
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// You're not the boss of me!
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}
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void
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MidiSource::invalidate ()
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{
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_model_iter_valid = false;
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_model_iter.invalidate();
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}
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nframes_t
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MidiSource::midi_read (Evoral::EventSink<nframes_t>& dst, sframes_t source_start,
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sframes_t start, nframes_t cnt,
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sframes_t stamp_offset, sframes_t negative_stamp_offset,
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MidiStateTracker* tracker) const
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{
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Glib::Mutex::Lock lm (_lock);
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BeatsFramesConverter converter(_session.tempo_map(), source_start);
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if (_model) {
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Evoral::Sequence<double>::const_iterator& i = _model_iter;
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// If the cached iterator is invalid, search for the first event past start
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if (_last_read_end == 0 || start != _last_read_end || !_model_iter_valid) {
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DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 search for relevant iterator for %1 / %2\n", _name, source_start, start));
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for (i = _model->begin(); i != _model->end(); ++i) {
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if (converter.to(i->time()) >= start) {
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break;
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}
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}
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_model_iter_valid = true;
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} else {
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DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 use cached iterator for %1 / %2\n", _name, source_start, start));
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}
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_last_read_end = start + cnt;
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// Read events up to end
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for (; i != _model->end(); ++i) {
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const sframes_t time_frames = converter.to(i->time());
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if (time_frames < start + cnt) {
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dst.write(time_frames + stamp_offset - negative_stamp_offset,
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i->event_type(), i->size(), i->buffer());
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if (tracker) {
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Evoral::MIDIEvent<Evoral::MusicalTime>& ev (*(Evoral::MIDIEvent<Evoral::MusicalTime>*) (&(*i)));
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if (ev.is_note_on()) {
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DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note on %2 @ %3\n", _name, ev.note(), time_frames));
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tracker->add (ev.note(), ev.channel());
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} else if (ev.is_note_off()) {
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DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note off %2 @ %3\n", _name, ev.note(), time_frames));
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tracker->remove (ev.note(), ev.channel());
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}
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}
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} else {
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break;
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}
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}
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return cnt;
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} else {
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return read_unlocked (dst, source_start, start, cnt, stamp_offset, negative_stamp_offset, tracker);
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}
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}
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nframes_t
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MidiSource::midi_write (MidiRingBuffer<nframes_t>& source, sframes_t source_start, nframes_t duration)
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{
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Glib::Mutex::Lock lm (_lock);
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const nframes_t ret = write_unlocked (source, source_start, duration);
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_last_write_end += duration;
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return ret;
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}
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void
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MidiSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
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{
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set_timeline_position(start_frame);
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if (_model) {
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_model->set_note_mode(mode);
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_model->start_write();
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}
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_last_write_end = start_frame;
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_writing = true;
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}
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void
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MidiSource::mark_streaming_write_started ()
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{
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NoteMode note_mode = _model ? _model->note_mode() : Sustained;
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mark_streaming_midi_write_started(note_mode, _session.transport_frame());
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}
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void
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MidiSource::mark_streaming_write_completed ()
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{
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if (_model) {
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_model->end_write(false);
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}
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_writing = false;
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}
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boost::shared_ptr<MidiSource>
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MidiSource::clone (Evoral::MusicalTime begin, Evoral::MusicalTime end)
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{
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string newname = PBD::basename_nosuffix(_name.val());
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string newpath;
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/* get a new name for the MIDI file we're going to write to
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*/
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do {
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newname = bump_name_once (newname, '-');
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/* XXX build path safely */
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newpath = _session.session_directory().midi_path().to_string() +"/"+ newname + ".mid";
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} while (Glib::file_test (newpath, Glib::FILE_TEST_EXISTS));
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boost::shared_ptr<MidiSource> newsrc = boost::dynamic_pointer_cast<MidiSource>(
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SourceFactory::createWritable(DataType::MIDI, _session,
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newpath, false, _session.frame_rate()));
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newsrc->set_timeline_position(_timeline_position);
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if (_model) {
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if (begin == Evoral::MinMusicalTime && end == Evoral::MaxMusicalTime) {
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_model->write_to (newsrc);
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} else {
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_model->write_section_to (newsrc, begin, end);
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}
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} else {
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error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
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return boost::shared_ptr<MidiSource>();
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}
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newsrc->flush_midi();
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/* force a reload of the model if the range is partial */
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if (begin != Evoral::MinMusicalTime || end != Evoral::MaxMusicalTime) {
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newsrc->load_model (true, true);
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} else {
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newsrc->set_model (_model);
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}
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return newsrc;
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}
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void
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MidiSource::session_saved()
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{
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flush_midi();
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if (_model && _model->edited()) {
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boost::shared_ptr<MidiSource> newsrc = clone ();
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if (newsrc) {
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_model->set_midi_source (newsrc.get());
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Switched (newsrc); /* EMIT SIGNAL */
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}
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}
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}
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void
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MidiSource::set_note_mode(NoteMode mode)
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{
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if (_model) {
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_model->set_note_mode(mode);
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}
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}
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void
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MidiSource::drop_model ()
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{
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cerr << name() << " drop model\n";
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_model.reset();
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}
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