524 lines
12 KiB
C++
524 lines
12 KiB
C++
/*
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Copyright (C) 2002 Paul Davis
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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 <set>
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#include <climits>
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#include <float.h>
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#include <cmath>
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#include <sstream>
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#include <algorithm>
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#include "ardour/automation_list.h"
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#include "ardour/event_type_map.h"
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#include "ardour/parameter_descriptor.h"
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#include "evoral/Curve.hpp"
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#include "pbd/stacktrace.h"
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#include "pbd/enumwriter.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,AutomationList *> AutomationList::AutomationListCreated;
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#if 0
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static void dumpit (const AutomationList& al, string prefix = "")
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{
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cerr << prefix << &al << endl;
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for (AutomationList::const_iterator i = al.begin(); i != al.end(); ++i) {
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cerr << prefix << '\t' << (*i)->when << ',' << (*i)->value << endl;
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}
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cerr << "\n";
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}
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#endif
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AutomationList::AutomationList (const Evoral::Parameter& id, const Evoral::ParameterDescriptor& desc)
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: ControlList(id, desc)
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{
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_state = Off;
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_style = Absolute;
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g_atomic_int_set (&_touching, 0);
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create_curve_if_necessary();
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assert(_parameter.type() != NullAutomation);
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AutomationListCreated(this);
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}
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AutomationList::AutomationList (const Evoral::Parameter& id)
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: ControlList(id, ARDOUR::ParameterDescriptor(id))
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{
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_state = Off;
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_style = Absolute;
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g_atomic_int_set (&_touching, 0);
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create_curve_if_necessary();
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assert(_parameter.type() != NullAutomation);
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AutomationListCreated(this);
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}
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AutomationList::AutomationList (const AutomationList& other)
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: StatefulDestructible()
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, ControlList(other)
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{
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_style = other._style;
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_state = other._state;
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g_atomic_int_set (&_touching, other.touching());
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create_curve_if_necessary();
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assert(_parameter.type() != NullAutomation);
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AutomationListCreated(this);
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}
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AutomationList::AutomationList (const AutomationList& other, double start, double end)
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: ControlList(other, start, end)
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{
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_style = other._style;
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_state = other._state;
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g_atomic_int_set (&_touching, other.touching());
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create_curve_if_necessary();
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assert(_parameter.type() != NullAutomation);
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AutomationListCreated(this);
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}
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/** @param id is used for legacy sessions where the type is not present
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* in or below the AutomationList node. It is used if @param id is non-null.
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*/
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AutomationList::AutomationList (const XMLNode& node, Evoral::Parameter id)
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: ControlList(id, ARDOUR::ParameterDescriptor(id))
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{
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g_atomic_int_set (&_touching, 0);
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_state = Off;
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_style = Absolute;
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set_state (node, Stateful::loading_state_version);
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if (id) {
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_parameter = id;
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}
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create_curve_if_necessary();
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assert(_parameter.type() != NullAutomation);
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AutomationListCreated(this);
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}
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AutomationList::~AutomationList()
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{
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}
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boost::shared_ptr<Evoral::ControlList>
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AutomationList::create(const Evoral::Parameter& id,
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const Evoral::ParameterDescriptor& desc)
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{
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return boost::shared_ptr<Evoral::ControlList>(new AutomationList(id, desc));
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}
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void
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AutomationList::create_curve_if_necessary()
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{
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switch (_parameter.type()) {
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case GainAutomation:
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case TrimAutomation:
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case PanAzimuthAutomation:
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case PanElevationAutomation:
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case PanWidthAutomation:
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case FadeInAutomation:
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case FadeOutAutomation:
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case EnvelopeAutomation:
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create_curve();
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break;
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default:
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break;
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}
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}
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AutomationList&
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AutomationList::operator= (const AutomationList& other)
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{
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if (this != &other) {
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ControlList::operator= (other);
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_state = other._state;
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_style = other._style;
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_touching = other._touching;
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mark_dirty ();
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maybe_signal_changed ();
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}
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return *this;
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}
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void
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AutomationList::maybe_signal_changed ()
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{
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ControlList::maybe_signal_changed ();
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if (!ControlList::frozen()) {
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StateChanged (); /* EMIT SIGNAL */
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}
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}
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void
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AutomationList::set_automation_state (AutoState s)
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{
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if (s != _state) {
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_state = s;
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automation_state_changed (s); /* EMIT SIGNAL */
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}
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}
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void
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AutomationList::set_automation_style (AutoStyle s)
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{
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if (s != _style) {
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_style = s;
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automation_style_changed (); /* EMIT SIGNAL */
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}
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}
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void
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AutomationList::start_touch (double when)
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{
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if (_state == Touch) {
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start_write_pass (when);
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}
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g_atomic_int_set (&_touching, 1);
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}
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void
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AutomationList::stop_touch (bool mark, double)
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{
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if (g_atomic_int_get (&_touching) == 0) {
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/* this touch has already been stopped (probably by Automatable::transport_stopped),
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so we've nothing to do.
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*/
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return;
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}
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g_atomic_int_set (&_touching, 0);
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if (_state == Touch) {
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if (mark) {
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/* XXX need to mark the last added point with the
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* current time
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*/
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}
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}
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}
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void
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AutomationList::thaw ()
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{
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ControlList::thaw();
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if (_changed_when_thawed) {
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_changed_when_thawed = false;
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StateChanged(); /* EMIT SIGNAL */
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}
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}
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XMLNode&
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AutomationList::get_state ()
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{
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return state (true);
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}
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XMLNode&
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AutomationList::state (bool full)
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{
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XMLNode* root = new XMLNode (X_("AutomationList"));
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char buf[64];
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LocaleGuard lg (X_("C"));
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root->add_property ("automation-id", EventTypeMap::instance().to_symbol(_parameter));
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root->add_property ("id", id().to_s());
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snprintf (buf, sizeof (buf), "%.12g", _default_value);
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root->add_property ("default", buf);
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snprintf (buf, sizeof (buf), "%.12g", _min_yval);
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root->add_property ("min-yval", buf);
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snprintf (buf, sizeof (buf), "%.12g", _max_yval);
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root->add_property ("max-yval", buf);
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root->add_property ("interpolation-style", enum_2_string (_interpolation));
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if (full) {
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/* never serialize state with Write enabled - too dangerous
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for the user's data
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*/
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if (_state != Write) {
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root->add_property ("state", auto_state_to_string (_state));
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} else {
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if (_events.empty ()) {
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root->add_property ("state", auto_state_to_string (Off));
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} else {
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root->add_property ("state", auto_state_to_string (Touch));
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}
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}
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} else {
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/* never save anything but Off for automation state to a template */
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root->add_property ("state", auto_state_to_string (Off));
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}
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root->add_property ("style", auto_style_to_string (_style));
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if (!_events.empty()) {
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root->add_child_nocopy (serialize_events());
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}
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return *root;
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}
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XMLNode&
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AutomationList::serialize_events ()
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{
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XMLNode* node = new XMLNode (X_("events"));
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stringstream str;
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str.precision(15); //10 digits is enough digits for 24 hours at 96kHz
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for (iterator xx = _events.begin(); xx != _events.end(); ++xx) {
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str << (double) (*xx)->when;
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str << ' ';
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str <<(double) (*xx)->value;
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str << '\n';
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}
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/* XML is a bit wierd */
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XMLNode* content_node = new XMLNode (X_("foo")); /* it gets renamed by libxml when we set content */
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content_node->set_content (str.str());
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node->add_child_nocopy (*content_node);
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return *node;
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}
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int
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AutomationList::deserialize_events (const XMLNode& node)
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{
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if (node.children().empty()) {
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return -1;
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}
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XMLNode* content_node = node.children().front();
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if (content_node->content().empty()) {
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return -1;
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}
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ControlList::freeze ();
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clear ();
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stringstream str (content_node->content());
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double x;
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double y;
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bool ok = true;
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while (str) {
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str >> x;
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if (!str) {
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break;
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}
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str >> y;
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if (!str) {
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ok = false;
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break;
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}
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fast_simple_add (x, y);
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}
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if (!ok) {
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clear ();
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error << _("automation list: cannot load coordinates from XML, all points ignored") << endmsg;
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} else {
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mark_dirty ();
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maybe_signal_changed ();
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}
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thaw ();
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return 0;
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}
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int
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AutomationList::set_state (const XMLNode& node, int version)
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{
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LocaleGuard lg (X_("C"));
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XMLNodeList nlist = node.children();
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XMLNode* nsos;
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XMLNodeIterator niter;
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const XMLProperty* prop;
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if (node.name() == X_("events")) {
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/* partial state setting*/
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return deserialize_events (node);
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}
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if (node.name() == X_("Envelope") || node.name() == X_("FadeOut") || node.name() == X_("FadeIn")) {
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if ((nsos = node.child (X_("AutomationList")))) {
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/* new school in old school clothing */
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return set_state (*nsos, version);
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}
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/* old school */
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const XMLNodeList& elist = node.children();
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XMLNodeConstIterator i;
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XMLProperty* prop;
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pframes_t x;
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double y;
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ControlList::freeze ();
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clear ();
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for (i = elist.begin(); i != elist.end(); ++i) {
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if ((prop = (*i)->property ("x")) == 0) {
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error << _("automation list: no x-coordinate stored for control point (point ignored)") << endmsg;
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continue;
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}
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x = atoi (prop->value().c_str());
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if ((prop = (*i)->property ("y")) == 0) {
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error << _("automation list: no y-coordinate stored for control point (point ignored)") << endmsg;
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continue;
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}
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y = atof (prop->value().c_str());
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fast_simple_add (x, y);
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}
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thaw ();
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return 0;
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}
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if (node.name() != X_("AutomationList") ) {
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error << string_compose (_("AutomationList: passed XML node called %1, not \"AutomationList\" - ignored"), node.name()) << endmsg;
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return -1;
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}
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if (set_id (node)) {
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/* update session AL list */
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AutomationListCreated(this);
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}
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if ((prop = node.property (X_("automation-id"))) != 0){
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_parameter = EventTypeMap::instance().from_symbol(prop->value());
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} else {
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warning << "Legacy session: automation list has no automation-id property." << endmsg;
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}
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if ((prop = node.property (X_("interpolation-style"))) != 0) {
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_interpolation = (InterpolationStyle)string_2_enum(prop->value(), _interpolation);
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} else {
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_interpolation = Linear;
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}
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if ((prop = node.property (X_("default"))) != 0){
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_default_value = atof (prop->value().c_str());
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} else {
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_default_value = 0.0;
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}
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if ((prop = node.property (X_("style"))) != 0) {
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_style = string_to_auto_style (prop->value());
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} else {
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_style = Absolute;
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}
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if ((prop = node.property (X_("state"))) != 0) {
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_state = string_to_auto_state (prop->value());
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if (_state == Write) {
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_state = Off;
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}
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automation_state_changed(_state);
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} else {
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_state = Off;
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}
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if ((prop = node.property (X_("min-yval"))) != 0) {
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_min_yval = atof (prop->value ().c_str());
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} else {
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_min_yval = FLT_MIN;
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}
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if ((prop = node.property (X_("max-yval"))) != 0) {
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_max_yval = atof (prop->value ().c_str());
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} else {
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_max_yval = FLT_MAX;
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}
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bool have_events = false;
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for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
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if ((*niter)->name() == X_("events")) {
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deserialize_events (*(*niter));
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have_events = true;
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}
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}
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if (!have_events) {
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/* there was no Events child node; clear any current events */
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freeze ();
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clear ();
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mark_dirty ();
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maybe_signal_changed ();
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thaw ();
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}
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return 0;
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}
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bool
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AutomationList::operator!= (AutomationList const & other) const
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{
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return (
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static_cast<ControlList const &> (*this) != static_cast<ControlList const &> (other) ||
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_state != other._state ||
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_style != other._style ||
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_touching != other._touching
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);
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}
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PBD::PropertyBase *
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AutomationListProperty::clone () const
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{
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return new AutomationListProperty (
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this->property_id(),
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boost::shared_ptr<AutomationList> (new AutomationList (*this->_old.get())),
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boost::shared_ptr<AutomationList> (new AutomationList (*this->_current.get()))
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);
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}
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