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Diffstat (limited to 'src/com/jsyn/midi/MidiConstants.java')
-rw-r--r-- | src/com/jsyn/midi/MidiConstants.java | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/src/com/jsyn/midi/MidiConstants.java b/src/com/jsyn/midi/MidiConstants.java deleted file mode 100644 index 8c92119..0000000 --- a/src/com/jsyn/midi/MidiConstants.java +++ /dev/null @@ -1,84 +0,0 @@ -/* - * Copyright 2010 Phil Burk, Mobileer Inc - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.jsyn.midi; - -/** - * Constants that define the MIDI standard. - * - * @author Phil Burk (C) 2010 Mobileer Inc - */ -public class MidiConstants { - - public static final int MAX_CHANNELS = 16; - // Basic commands. - public static final int NOTE_OFF = 0x80; - public static final int NOTE_ON = 0x90; - public static final int POLYPHONIC_AFTERTOUCH = 0xA0; - public static final int CONTROL_CHANGE = 0xB0; - public static final int PROGRAM_CHANGE = 0xC0; - public static final int CHANNEL_AFTERTOUCH = 0xD0; - public static final int CHANNEL_PRESSURE = CHANNEL_AFTERTOUCH; - public static final int PITCH_BEND = 0xE0; - public static final int SYSTEM_COMMON = 0xF0; - - public static final int PITCH_BEND_CENTER = 0x2000; - - public static final int CONTROLLER_BANK_SELECT = 0; - public static final int CONTROLLER_MOD_WHEEL = 1; - public static final int CONTROLLER_BREATH = 2; - public static final int CONTROLLER_DATA_ENTRY = 6; - public static final int CONTROLLER_VOLUME = 7; - public static final int CONTROLLER_PAN = 10; - - public static final int CONTROLLER_LSB_OFFSET = 32; - public static final int CONTROLLER_DATA_ENTRY_LSB = CONTROLLER_DATA_ENTRY + CONTROLLER_LSB_OFFSET; - - public static final int CONTROLLER_TIMBRE = 74; // Often used by MPE for Y axis control. - - public static final int CONTROLLER_DATA_INCREMENT = 96; - public static final int CONTROLLER_DATA_DECREMENT = 97; - public static final int CONTROLLER_NRPN_LSB = 98; - public static final int CONTROLLER_NRPN_MSB = 99; - public static final int CONTROLLER_RPN_LSB = 100; - public static final int CONTROLLER_RPN_MSB = 101; - - public static final int RPN_BEND_RANGE = 0; - public static final int RPN_FINE_TUNING = 1; - - public static final String PITCH_NAMES[] = { - "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B" - }; - - /** - * Calculate frequency in Hertz based on MIDI pitch. Middle C is 60.0. You can use fractional - * pitches so 60.5 would give you a pitch half way between C and C#. - */ - static final double CONCERT_A_FREQUENCY = 440.0; - static final double CONCERT_A_PITCH = 69.0; - - public static double convertPitchToFrequency(double pitch) { - return CONCERT_A_FREQUENCY * Math.pow(2.0, ((pitch - CONCERT_A_PITCH) / 12.0)); - } - - /** - * Calculate MIDI pitch based on frequency in Hertz. Middle C is 60.0. - */ - public static double convertFrequencyToPitch(double frequency) { - return CONCERT_A_PITCH + (12 * Math.log(frequency / CONCERT_A_FREQUENCY) / Math.log(2.0)); - } - -} |