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authorDavid Robillard <d@drobilla.net>2014-12-01 14:28:03 -0500
committerDavid Robillard <d@drobilla.net>2014-12-01 23:35:24 -0500
commit767c0238a34ef4acc4d345e88cd5ddb0c8a8e421 (patch)
treefed11fb6f4e4e08a7c35eb45f53aea70dc66e4f8 /libs/ardour/parameter_descriptor.cc
parentcb8abbe8d2f0e4dfe52bd35613ebba7689628eca (diff)
Replace half-baked param metadata with descriptor.
Among other things, this means that automation controls/lists have the actual min/max/normal/toggled of parameters, and not those inferred from the Parameter ID, which is not correct for things like plugin parameters. Pushing things down to the Evoral::ParmeterDescriptor may be useful in the future to have lists do smarter things based on parameter range, but currently I have just pushed down the above-mentioned currently used attributes.
Diffstat (limited to 'libs/ardour/parameter_descriptor.cc')
-rw-r--r--libs/ardour/parameter_descriptor.cc135
1 files changed, 135 insertions, 0 deletions
diff --git a/libs/ardour/parameter_descriptor.cc b/libs/ardour/parameter_descriptor.cc
new file mode 100644
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+++ b/libs/ardour/parameter_descriptor.cc
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+/*
+ Copyright (C) 2014 Paul Davis
+ Author: David Robillard
+
+ This program 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.
+
+ This program 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 more 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.,
+ 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "ardour/amp.h"
+#include "ardour/parameter_descriptor.h"
+#include "ardour/types.h"
+
+namespace ARDOUR {
+
+ParameterDescriptor::ParameterDescriptor(const Evoral::Parameter& parameter)
+ : Evoral::ParameterDescriptor()
+ , key((uint32_t)-1)
+ , datatype(Variant::NOTHING)
+ , unit(NONE)
+ , step(0)
+ , smallstep(0)
+ , largestep(0)
+ , integer_step(parameter.type() >= MidiCCAutomation &&
+ parameter.type() <= MidiChannelPressureAutomation)
+ , logarithmic(false)
+ , sr_dependent(false)
+ , min_unbound(0)
+ , max_unbound(0)
+ , enumeration(false)
+{
+ if (parameter.type() == GainAutomation) {
+ unit = DB;
+ }
+
+ switch((AutomationType)parameter.type()) {
+ case GainAutomation:
+ upper = Amp::max_gain_coefficient;
+ normal = 1.0f;
+ break;
+ case PanAzimuthAutomation:
+ normal = 0.5f; // there really is no _normal but this works for stereo, sort of
+ break;
+ case PanWidthAutomation:
+ lower = -1.0;
+ upper = 1.0;
+ normal = 0.0f;
+ break;
+ case RecEnableAutomation:
+ /* default 0.0 - 1.0 is fine */
+ toggled = true;
+ break;
+ case PluginAutomation:
+ case FadeInAutomation:
+ case FadeOutAutomation:
+ case EnvelopeAutomation:
+ upper = 2.0f;
+ normal = 1.0f;
+ break;
+ case SoloAutomation:
+ case MuteAutomation:
+ upper = 1.0f;
+ normal = 0.0f;
+ toggled = true;
+ break;
+ case MidiCCAutomation:
+ case MidiPgmChangeAutomation:
+ case MidiChannelPressureAutomation:
+ lower = 0.0;
+ normal = 0.0;
+ upper = 127.0;
+ break;
+ case MidiPitchBenderAutomation:
+ lower = 0.0;
+ normal = 8192.0;
+ upper = 16383.0;
+ break;
+ default:
+ break;
+ }
+
+ update_steps();
+}
+
+ParameterDescriptor::ParameterDescriptor()
+ : Evoral::ParameterDescriptor()
+ , key((uint32_t)-1)
+ , datatype(Variant::NOTHING)
+ , unit(NONE)
+ , step(0)
+ , smallstep(0)
+ , largestep(0)
+ , integer_step(false)
+ , logarithmic(false)
+ , sr_dependent(false)
+ , min_unbound(0)
+ , max_unbound(0)
+ , enumeration(false)
+{}
+
+void
+ParameterDescriptor::update_steps()
+{
+ if (unit == ParameterDescriptor::MIDI_NOTE) {
+ step = smallstep = 1; // semitone
+ largestep = 12; // octave
+ } else if (integer_step) {
+ const float delta = upper - lower;
+
+ smallstep = delta / 10000.0f;
+ step = delta / 1000.0f;
+ largestep = delta / 40.0f;
+
+ smallstep = std::max(1.0, rint(smallstep));
+ step = std::max(1.0, rint(step));
+ largestep = std::max(1.0, rint(largestep));
+ }
+ /* else: leave all others as default '0'
+ * in that case the UI (eg. AutomationController::create)
+ * uses internal_to_interface() to map the value
+ * to an appropriate interface range
+ */
+}
+
+} // namespace ARDOUR