diff options
author | David Robillard <d@drobilla.net> | 2008-09-19 00:47:49 +0000 |
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committer | David Robillard <d@drobilla.net> | 2008-09-19 00:47:49 +0000 |
commit | d357eca668044badcb4bab318e2e74cfffa9a0b0 (patch) | |
tree | eab9bf33b194f9e37c20f84375e5caa748ee994a /libs/evoral/src/Control.cpp | |
parent | 3d976c5b727e4d55ce439b1d7c055a814477fa1a (diff) |
Factor out sequencing related things into an independant new library: "evoral".
Anything related to the storage of events/values over a range of time lives in evoral.
This includes MidiModel (Evoral::Sequence) and automation data (AutomationList (Evoral::ControlList),
Automatable (Evoral::ControlSet), etc).
libs/evoral synced with http://svn.drobilla.net/lad/trunk/evoral r1511.
git-svn-id: svn://localhost/ardour2/branches/3.0@3754 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/evoral/src/Control.cpp')
-rw-r--r-- | libs/evoral/src/Control.cpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/libs/evoral/src/Control.cpp b/libs/evoral/src/Control.cpp new file mode 100644 index 0000000000..8efc2a6659 --- /dev/null +++ b/libs/evoral/src/Control.cpp @@ -0,0 +1,82 @@ +/* This file is part of Evoral. + * Copyright (C) 2008 Dave Robillard <http://drobilla.net> + * Copyright (C) 2000-2008 Paul Davis + * + * Evoral 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. + * + * Evoral 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 <iostream> +#include <evoral/Control.hpp> +#include <evoral/ControlList.hpp> + +namespace Evoral { + +Control::Control(boost::shared_ptr<ControlList> list) + : _list(list) + , _user_value(list->default_value()) +{ +} + + +/** Get the currently effective value (ie the one that corresponds to current output) + */ +float +Control::get_value(bool from_list, nframes_t frame) const +{ + if (from_list) + return _list->eval(frame); + else + return _user_value; +} + + +void +Control::set_value(float value, bool to_list, nframes_t frame) +{ + _user_value = value; + + if (to_list) + _list->add(frame, value); +} + + +/** Get the latest user-set value, which may not equal get_value() when automation + * is playing back, etc. + * + * Automation write/touch works by periodically sampling this value and adding it + * to the AutomationList. + */ +float +Control::user_value() const +{ + return _user_value; +} + + +void +Control::set_list(boost::shared_ptr<ControlList> list) +{ + _list = list; + _user_value = list->default_value(); +} + + +Parameter +Control::parameter() const +{ + return _list->parameter(); +} + +} // namespace Evoral + |