389 lines
11 KiB
C++
389 lines
11 KiB
C++
/*
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Copyright (C) 2006 Paul Davis
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Author: David Robillard
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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 <algorithm>
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#include <cassert>
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#include <cstdlib>
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#include <iostream>
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#include <utility>
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#include "evoral/EventList.hpp"
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#include "evoral/Control.hpp"
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#include "ardour/beats_frames_converter.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_playlist.h"
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#include "ardour/midi_region.h"
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#include "ardour/midi_source.h"
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#include "ardour/midi_state_tracker.h"
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#include "ardour/session.h"
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#include "ardour/types.h"
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#include "i18n.h"
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using namespace ARDOUR;
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using namespace PBD;
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using namespace std;
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MidiPlaylist::MidiPlaylist (Session& session, const XMLNode& node, bool hidden)
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: Playlist (session, node, DataType::MIDI, hidden)
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, _note_mode(Sustained)
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, _read_end(0)
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{
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#ifndef NDEBUG
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const XMLProperty* prop = node.property("type");
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assert(prop && DataType(prop->value()) == DataType::MIDI);
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#endif
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in_set_state++;
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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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in_set_state--;
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relayer ();
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}
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MidiPlaylist::MidiPlaylist (Session& session, string name, bool hidden)
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: Playlist (session, name, DataType::MIDI, hidden)
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, _note_mode(Sustained)
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, _read_end(0)
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{
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}
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MidiPlaylist::MidiPlaylist (boost::shared_ptr<const MidiPlaylist> other, string name, bool hidden)
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: Playlist (other, name, hidden)
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, _note_mode(other->_note_mode)
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, _read_end(0)
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{
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}
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MidiPlaylist::MidiPlaylist (boost::shared_ptr<const MidiPlaylist> other,
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framepos_t start,
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framecnt_t dur,
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string name,
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bool hidden)
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: Playlist (other, start, dur, name, hidden)
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, _note_mode(other->_note_mode)
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, _read_end(0)
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{
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}
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MidiPlaylist::~MidiPlaylist ()
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{
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}
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template<typename Time>
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struct EventsSortByTimeAndType {
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bool operator() (Evoral::Event<Time>* a, Evoral::Event<Time>* b) {
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if (a->time() == b->time()) {
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if (parameter_is_midi ((AutomationType)a->event_type()) &&
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parameter_is_midi ((AutomationType)b->event_type())) {
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/* negate return value since we must return whether
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* or not a should sort before b, not b before a
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*/
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return !MidiBuffer::second_simultaneous_midi_byte_is_first (a->buffer()[0], b->buffer()[0]);
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}
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}
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return a->time() < b->time();
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}
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};
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framecnt_t
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MidiPlaylist::read (Evoral::EventSink<framepos_t>& dst,
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framepos_t start,
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framecnt_t dur,
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unsigned chan_n,
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MidiChannelFilter* filter)
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{
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typedef pair<MidiStateTracker*,framepos_t> TrackerInfo;
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Playlist::RegionReadLock rl (this);
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DEBUG_TRACE (DEBUG::MidiPlaylistIO,
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string_compose ("---- MidiPlaylist::read %1 .. %2 (%3 trackers) ----\n",
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start, start + dur, _note_trackers.size()));
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/* First, emit any queued edit fixup events at start. */
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for (NoteTrackers::iterator t = _note_trackers.begin(); t != _note_trackers.end(); ++t) {
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t->second->fixer.emit(dst, _read_end, t->second->tracker);
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}
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/* Find relevant regions that overlap [start..end] */
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const framepos_t end = start + dur - 1;
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std::vector< boost::shared_ptr<Region> > regs;
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std::vector< boost::shared_ptr<Region> > ended;
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for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
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switch ((*i)->coverage (start, end)) {
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case Evoral::OverlapStart:
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case Evoral::OverlapInternal:
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regs.push_back (*i);
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break;
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case Evoral::OverlapExternal:
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/* this region is entirely contained in the read range */
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regs.push_back (*i);
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ended.push_back (*i);
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break;
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case Evoral::OverlapEnd:
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/* this region ends within the read range */
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regs.push_back (*i);
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ended.push_back (*i);
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break;
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default:
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/* we don't care */
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break;
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}
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}
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/* If we are reading from a single region, we can read directly into dst. Otherwise,
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we read into a temporarily list, sort it, then write that to dst. */
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const bool direct_read = regs.size() == 1 &&
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(ended.empty() || (ended.size() == 1 && ended.front() == regs.front()));
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Evoral::EventList<framepos_t> evlist;
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Evoral::EventSink<framepos_t>& tgt = direct_read ? dst : evlist;
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DEBUG_TRACE (DEBUG::MidiPlaylistIO,
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string_compose ("\t%1 regions to read, direct: %2\n", regs.size(), direct_read));
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for (vector<boost::shared_ptr<Region> >::iterator i = regs.begin(); i != regs.end(); ++i) {
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boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(*i);
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if (!mr) {
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continue;
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}
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/* Get the existing note tracker for this region, or create a new one. */
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NoteTrackers::iterator t = _note_trackers.find (mr.get());
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bool new_tracker = false;
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boost::shared_ptr<RegionTracker> tracker;
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if (t == _note_trackers.end()) {
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tracker = boost::shared_ptr<RegionTracker>(new RegionTracker);
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new_tracker = true;
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DEBUG_TRACE (DEBUG::MidiPlaylistIO,
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string_compose ("\tPre-read %1 (%2 .. %3): new tracker\n",
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mr->name(), mr->position(), mr->last_frame()));
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} else {
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tracker = t->second;
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DEBUG_TRACE (DEBUG::MidiPlaylistIO,
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string_compose ("\tPre-read %1 (%2 .. %3): %4 active notes\n",
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mr->name(), mr->position(), mr->last_frame(), tracker->tracker.on()));
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}
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/* Read from region into target. */
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mr->read_at (tgt, start, dur, chan_n, _note_mode, &tracker->tracker, filter);
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DEBUG_TRACE (DEBUG::MidiPlaylistIO,
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string_compose ("\tPost-read: %1 active notes\n", tracker->tracker.on()));
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if (find (ended.begin(), ended.end(), *i) != ended.end()) {
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/* Region ended within the read range, so resolve any active notes
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(either stuck notes in the data, or notes that end after the end
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of the region). */
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DEBUG_TRACE (DEBUG::MidiPlaylistIO,
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string_compose ("\t%1 ended, resolve notes and delete (%2) tracker\n",
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mr->name(), ((new_tracker) ? "new" : "old")));
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tracker->tracker.resolve_notes (tgt, (*i)->last_frame());
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if (!new_tracker) {
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_note_trackers.erase (t);
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}
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} else {
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if (new_tracker) {
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_note_trackers.insert (make_pair (mr.get(), tracker));
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DEBUG_TRACE (DEBUG::MidiPlaylistIO, "\tadded tracker to trackers\n");
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}
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}
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}
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if (!direct_read && !evlist.empty()) {
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/* We've read from multiple regions, sort the event list by time. */
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EventsSortByTimeAndType<framepos_t> cmp;
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evlist.sort (cmp);
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/* Copy ordered events from event list to dst. */
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for (Evoral::EventList<framepos_t>::iterator e = evlist.begin(); e != evlist.end(); ++e) {
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Evoral::Event<framepos_t>* ev (*e);
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dst.write (ev->time(), ev->event_type(), ev->size(), ev->buffer());
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delete ev;
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}
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}
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DEBUG_TRACE (DEBUG::MidiPlaylistIO, "---- End MidiPlaylist::read ----\n");
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_read_end = start + dur;
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return dur;
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}
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void
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MidiPlaylist::region_edited(boost::shared_ptr<Region> region,
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const MidiModel::NoteDiffCommand* cmd)
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{
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typedef MidiModel::NoteDiffCommand Command;
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boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(region);
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if (!mr || !_session.transport_rolling()) {
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return;
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}
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/* Take write lock to prevent concurrency with read(). */
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Playlist::RegionWriteLock lock(this);
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NoteTrackers::iterator t = _note_trackers.find(mr.get());
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if (t == _note_trackers.end()) {
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return; /* Region is not currently active, nothing to do. */
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}
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/* Queue any necessary edit compensation events. */
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t->second->fixer.prepare(
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_session.tempo_map(), cmd, mr->position() - mr->start(),
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_read_end, mr->midi_source()->model()->active_notes());
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}
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void
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MidiPlaylist::reset_note_trackers ()
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{
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Playlist::RegionWriteLock rl (this, false);
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DEBUG_TRACE (DEBUG::MidiTrackers, string_compose ("%1 reset all note trackers\n", name()));
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_note_trackers.clear ();
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}
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void
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MidiPlaylist::resolve_note_trackers (Evoral::EventSink<framepos_t>& dst, framepos_t time)
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{
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Playlist::RegionWriteLock rl (this, false);
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for (NoteTrackers::iterator n = _note_trackers.begin(); n != _note_trackers.end(); ++n) {
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n->second->tracker.resolve_notes(dst, time);
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}
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DEBUG_TRACE (DEBUG::MidiTrackers, string_compose ("%1 resolve all note trackers\n", name()));
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_note_trackers.clear ();
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}
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void
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MidiPlaylist::remove_dependents (boost::shared_ptr<Region> region)
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{
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/* MIDI regions have no dependents (crossfades) but we might be tracking notes */
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_note_trackers.erase(region.get());
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}
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int
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MidiPlaylist::set_state (const XMLNode& node, int version)
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{
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in_set_state++;
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freeze ();
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if (Playlist::set_state (node, version)) {
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return -1;
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}
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thaw();
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in_set_state--;
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return 0;
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}
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void
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MidiPlaylist::dump () const
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{
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boost::shared_ptr<Region> r;
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cerr << "Playlist \"" << _name << "\" " << endl
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<< regions.size() << " regions "
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<< endl;
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for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
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r = *i;
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cerr << " " << r->name() << " @ " << r << " ["
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<< r->start() << "+" << r->length()
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<< "] at "
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<< r->position()
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<< " on layer "
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<< r->layer ()
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<< endl;
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}
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}
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bool
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MidiPlaylist::destroy_region (boost::shared_ptr<Region> region)
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{
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boost::shared_ptr<MidiRegion> r = boost::dynamic_pointer_cast<MidiRegion> (region);
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if (!r) {
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return false;
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}
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bool changed = false;
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{
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RegionWriteLock rlock (this);
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RegionList::iterator i;
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RegionList::iterator tmp;
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for (i = regions.begin(); i != regions.end(); ) {
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tmp = i;
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++tmp;
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if ((*i) == region) {
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regions.erase (i);
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changed = true;
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}
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i = tmp;
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}
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}
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if (changed) {
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/* overload this, it normally means "removed", not destroyed */
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notify_region_removed (region);
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}
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return changed;
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}
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set<Evoral::Parameter>
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MidiPlaylist::contained_automation()
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{
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/* this function is never called from a realtime thread, so
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its OK to block (for short intervals).
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*/
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Playlist::RegionReadLock rl (this);
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set<Evoral::Parameter> ret;
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for (RegionList::const_iterator r = regions.begin(); r != regions.end(); ++r) {
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boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(*r);
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for (Automatable::Controls::iterator c = mr->model()->controls().begin();
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c != mr->model()->controls().end(); ++c) {
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if (c->second->list()->size() > 0) {
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ret.insert(c->first);
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}
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}
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}
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return ret;
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}
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