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Diffstat (limited to 'libs/ardour/ardour/value_as_string.h')
-rw-r--r-- | libs/ardour/ardour/value_as_string.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libs/ardour/ardour/value_as_string.h b/libs/ardour/ardour/value_as_string.h new file mode 100644 index 0000000000..6c17ace5d3 --- /dev/null +++ b/libs/ardour/ardour/value_as_string.h @@ -0,0 +1,81 @@ +/* + 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. + +*/ + +#ifndef __ardour_value_as_string_h__ +#define __ardour_value_as_string_h__ + +#include <stddef.h> + +#include "ardour/parameter_descriptor.h" + +namespace ARDOUR { + +inline std::string +value_as_string(const ARDOUR::ParameterDescriptor& desc, + double v) +{ + char buf[32]; + + if (desc.scale_points) { + // Check if value is on a scale point + for (ARDOUR::ScalePoints::const_iterator i = desc.scale_points->begin(); + i != desc.scale_points->end(); + ++i) { + if (i->second == v) { + return i->first; // Found it, return scale point label + } + } + } + + // Value is not a scale point, print it normally + if (desc.unit == ARDOUR::ParameterDescriptor::MIDI_NOTE) { + if (v >= 0 && v <= 127) { + const int num = rint(v); + static const char names[12][3] = { + "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B" + }; + snprintf(buf, sizeof(buf), "%s %d", names[num % 12], (num / 12) - 2); + } else { + // Odd, invalid range, just print the number + snprintf(buf, sizeof(buf), "%.0f", v); + } + } else if (desc.integer_step) { + snprintf(buf, sizeof(buf), "%d", (int)v); + } else { + snprintf(buf, sizeof(buf), "%.2f", v); + } + if (desc.unit == ARDOUR::ParameterDescriptor::DB) { + // TODO: Move proper dB printing from AutomationLine here + return std::string(buf) + " dB"; + } + return buf; +} + +inline std::string +value_as_string(const ARDOUR::ParameterDescriptor& desc, + const ARDOUR::Variant& val) +{ + // Only numeric support, for now + return value_as_string(desc, val.to_double()); +} + +} // namespace ARDOUR + +#endif /* __ardour_value_as_string_h__ */ |