joey shelton / LED_Demo2

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Dependencies:   MAX44000 PWM_Tone_Library nexpaq_mdk

Fork of LED_Demo by joey shelton

mbd_os/libraries/USBDevice/USBMIDI/MIDIMessage.h@9:6bb35cef007d, 2016-10-22 (annotated)

Committer:
cyberjoey
Date:
Sat Oct 22 01:31:58 2016 +0000
Revision:
9:6bb35cef007d
Parent:
1:55a6170b404f 
WORKING

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 1:55a6170b404f 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
nexpaq 1:55a6170b404f 2 *
nexpaq 1:55a6170b404f 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
nexpaq 1:55a6170b404f 4 * and associated documentation files (the "Software"), to deal in the Software without
nexpaq 1:55a6170b404f 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
nexpaq 1:55a6170b404f 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
nexpaq 1:55a6170b404f 7 * Software is furnished to do so, subject to the following conditions:
nexpaq 1:55a6170b404f 8 *
nexpaq 1:55a6170b404f 9 * The above copyright notice and this permission notice shall be included in all copies or
nexpaq 1:55a6170b404f 10 * substantial portions of the Software.
nexpaq 1:55a6170b404f 11 *
nexpaq 1:55a6170b404f 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
nexpaq 1:55a6170b404f 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
nexpaq 1:55a6170b404f 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
nexpaq 1:55a6170b404f 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
nexpaq 1:55a6170b404f 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
nexpaq 1:55a6170b404f 17 */
nexpaq 1:55a6170b404f 18
nexpaq 1:55a6170b404f 19 #ifndef MIDIMESSAGE_H
nexpaq 1:55a6170b404f 20 #define MIDIMESSAGE_H
nexpaq 1:55a6170b404f 21
nexpaq 1:55a6170b404f 22 #include "mbed.h"
nexpaq 1:55a6170b404f 23
nexpaq 1:55a6170b404f 24 #define MAX_MIDI_MESSAGE_SIZE 256 // Max message size. SysEx can be up to 65536 but 256 should be fine for most usage
nexpaq 1:55a6170b404f 25
nexpaq 1:55a6170b404f 26 // MIDI Message Format
nexpaq 1:55a6170b404f 27 //
nexpaq 1:55a6170b404f 28 // [ msg(4) | channel(4) ] [ 0 | n(7) ] [ 0 | m(7) ]
nexpaq 1:55a6170b404f 29 //
nexpaq 1:55a6170b404f 30 // MIDI Data Messages (Channel Specific)
nexpaq 1:55a6170b404f 31 //
nexpaq 1:55a6170b404f 32 // Message msg n m
nexpaq 1:55a6170b404f 33 // ---------------------------------------------
nexpaq 1:55a6170b404f 34 // Note Off 0x8 Key Velocity
nexpaq 1:55a6170b404f 35 // Note On 0x9 Key Velocity
nexpaq 1:55a6170b404f 36 // Polyphonic Aftertouch 0xA Key Pressure
nexpaq 1:55a6170b404f 37 // Control Change 0xB Controller Value
nexpaq 1:55a6170b404f 38 // Program Change 0xC Program -
nexpaq 1:55a6170b404f 39 // Channel Aftertouch 0xD Pressure -
nexpaq 1:55a6170b404f 40 // Pitch Wheel 0xE LSB MSB
nexpaq 1:55a6170b404f 41
nexpaq 1:55a6170b404f 42 #define CABLE_NUM (0<<4)
nexpaq 1:55a6170b404f 43
nexpaq 1:55a6170b404f 44 /** A MIDI message container */
nexpaq 1:55a6170b404f 45 class MIDIMessage {
nexpaq 1:55a6170b404f 46 public:
nexpaq 1:55a6170b404f 47 MIDIMessage() : length(4) {}
nexpaq 1:55a6170b404f 48
nexpaq 1:55a6170b404f 49 MIDIMessage(uint8_t *buf) : length(4) {
nexpaq 1:55a6170b404f 50 for (int i = 0; i < 4; i++)
nexpaq 1:55a6170b404f 51 data[i] = buf[i];
nexpaq 1:55a6170b404f 52 }
nexpaq 1:55a6170b404f 53
nexpaq 1:55a6170b404f 54 // New constructor, buf is a true MIDI message (not USBMidi message) and buf_len true message length.
nexpaq 1:55a6170b404f 55 MIDIMessage(uint8_t *buf, int buf_len) {
nexpaq 1:55a6170b404f 56 length=buf_len+1;
nexpaq 1:55a6170b404f 57 // first byte keeped for retro-compatibility
nexpaq 1:55a6170b404f 58 data[0]=0;
nexpaq 1:55a6170b404f 59
nexpaq 1:55a6170b404f 60 for (int i = 0; i < buf_len; i++)
nexpaq 1:55a6170b404f 61 data[i+1] = buf[i];
nexpaq 1:55a6170b404f 62 }
nexpaq 1:55a6170b404f 63
nexpaq 1:55a6170b404f 64 // create messages
nexpaq 1:55a6170b404f 65
nexpaq 1:55a6170b404f 66 /** Create a NoteOff message
nexpaq 1:55a6170b404f 67 * @param key Key ID
nexpaq 1:55a6170b404f 68 * @param velocity Key velocity (0-127, default = 127)
nexpaq 1:55a6170b404f 69 * @param channel Key channel (0-15, default 0)
nexpaq 1:55a6170b404f 70 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 71 */
nexpaq 1:55a6170b404f 72 static MIDIMessage NoteOff(int key, int velocity = 127, int channel = 0) {
nexpaq 1:55a6170b404f 73 MIDIMessage msg;
nexpaq 1:55a6170b404f 74 msg.data[0] = CABLE_NUM | 0x08;
nexpaq 1:55a6170b404f 75 msg.data[1] = 0x80 | (channel & 0x0F);
nexpaq 1:55a6170b404f 76 msg.data[2] = key & 0x7F;
nexpaq 1:55a6170b404f 77 msg.data[3] = velocity & 0x7F;
nexpaq 1:55a6170b404f 78 return msg;
nexpaq 1:55a6170b404f 79 }
nexpaq 1:55a6170b404f 80
nexpaq 1:55a6170b404f 81 /** Create a NoteOn message
nexpaq 1:55a6170b404f 82 * @param key Key ID
nexpaq 1:55a6170b404f 83 * @param velocity Key velocity (0-127, default = 127)
nexpaq 1:55a6170b404f 84 * @param channel Key channel (0-15, default 0)
nexpaq 1:55a6170b404f 85 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 86 */
nexpaq 1:55a6170b404f 87 static MIDIMessage NoteOn(int key, int velocity = 127, int channel = 0) {
nexpaq 1:55a6170b404f 88 MIDIMessage msg;
nexpaq 1:55a6170b404f 89 msg.data[0] = CABLE_NUM | 0x09;
nexpaq 1:55a6170b404f 90 msg.data[1] = 0x90 | (channel & 0x0F);
nexpaq 1:55a6170b404f 91 msg.data[2] = key & 0x7F;
nexpaq 1:55a6170b404f 92 msg.data[3] = velocity & 0x7F;
nexpaq 1:55a6170b404f 93 return msg;
nexpaq 1:55a6170b404f 94 }
nexpaq 1:55a6170b404f 95
nexpaq 1:55a6170b404f 96 /** Create a PolyPhonic Aftertouch message
nexpaq 1:55a6170b404f 97 * @param key Key ID
nexpaq 1:55a6170b404f 98 * @param pressure Aftertouch pressure (0-127)
nexpaq 1:55a6170b404f 99 * @param channel Key channel (0-15, default 0)
nexpaq 1:55a6170b404f 100 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 101 */
nexpaq 1:55a6170b404f 102 static MIDIMessage PolyphonicAftertouch(int key, int pressure, int channel = 0) {
nexpaq 1:55a6170b404f 103 MIDIMessage msg;
nexpaq 1:55a6170b404f 104 msg.data[0] = CABLE_NUM | 0x0A;
nexpaq 1:55a6170b404f 105 msg.data[1] = 0xA0 | (channel & 0x0F);
nexpaq 1:55a6170b404f 106 msg.data[2] = key & 0x7F;
nexpaq 1:55a6170b404f 107 msg.data[3] = pressure & 0x7F;
nexpaq 1:55a6170b404f 108 return msg;
nexpaq 1:55a6170b404f 109 }
nexpaq 1:55a6170b404f 110
nexpaq 1:55a6170b404f 111 /** Create a Control Change message
nexpaq 1:55a6170b404f 112 * @param control Controller ID
nexpaq 1:55a6170b404f 113 * @param value Controller value (0-127)
nexpaq 1:55a6170b404f 114 * @param channel Controller channel (0-15, default 0)
nexpaq 1:55a6170b404f 115 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 116 */
nexpaq 1:55a6170b404f 117 static MIDIMessage ControlChange(int control, int value, int channel = 0) {
nexpaq 1:55a6170b404f 118 MIDIMessage msg;
nexpaq 1:55a6170b404f 119 msg.data[0] = CABLE_NUM | 0x0B;
nexpaq 1:55a6170b404f 120 msg.data[1] = 0xB0 | (channel & 0x0F);
nexpaq 1:55a6170b404f 121 msg.data[2] = control & 0x7F;
nexpaq 1:55a6170b404f 122 msg.data[3] = value & 0x7F;
nexpaq 1:55a6170b404f 123 return msg;
nexpaq 1:55a6170b404f 124 }
nexpaq 1:55a6170b404f 125
nexpaq 1:55a6170b404f 126 /** Create a Program Change message
nexpaq 1:55a6170b404f 127 * @param program Program ID
nexpaq 1:55a6170b404f 128 * @param channel Channel (0-15, default 0)
nexpaq 1:55a6170b404f 129 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 130 */
nexpaq 1:55a6170b404f 131 static MIDIMessage ProgramChange(int program, int channel = 0) {
nexpaq 1:55a6170b404f 132 MIDIMessage msg;
nexpaq 1:55a6170b404f 133 msg.data[0] = CABLE_NUM | 0x0C;
nexpaq 1:55a6170b404f 134 msg.data[1] = 0xC0 | (channel & 0x0F);
nexpaq 1:55a6170b404f 135 msg.data[2] = program & 0x7F;
nexpaq 1:55a6170b404f 136 msg.data[3] = 0x00;
nexpaq 1:55a6170b404f 137 return msg;
nexpaq 1:55a6170b404f 138 }
nexpaq 1:55a6170b404f 139
nexpaq 1:55a6170b404f 140 /** Create a Channel Aftertouch message
nexpaq 1:55a6170b404f 141 * @param pressure Pressure
nexpaq 1:55a6170b404f 142 * @param channel Key channel (0-15, default 0)
nexpaq 1:55a6170b404f 143 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 144 */
nexpaq 1:55a6170b404f 145 static MIDIMessage ChannelAftertouch(int pressure, int channel = 0) {
nexpaq 1:55a6170b404f 146 MIDIMessage msg;
nexpaq 1:55a6170b404f 147 msg.data[0] = CABLE_NUM | 0x0D;
nexpaq 1:55a6170b404f 148 msg.data[1] = 0xD0 | (channel & 0x0F);
nexpaq 1:55a6170b404f 149 msg.data[2] = pressure & 0x7F;
nexpaq 1:55a6170b404f 150 msg.data[3] = 0x00;
nexpaq 1:55a6170b404f 151 return msg;
nexpaq 1:55a6170b404f 152 }
nexpaq 1:55a6170b404f 153
nexpaq 1:55a6170b404f 154 /** Create a Pitch Wheel message
nexpaq 1:55a6170b404f 155 * @param pitch Pitch (-8192 - 8191, default = 0)
nexpaq 1:55a6170b404f 156 * @param channel Channel (0-15, default 0)
nexpaq 1:55a6170b404f 157 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 158 */
nexpaq 1:55a6170b404f 159 static MIDIMessage PitchWheel(int pitch = 0, int channel = 0) {
nexpaq 1:55a6170b404f 160 MIDIMessage msg;
nexpaq 1:55a6170b404f 161 int p = pitch + 8192; // 0 - 16383, 8192 is center
nexpaq 1:55a6170b404f 162 msg.data[0] = CABLE_NUM | 0x0E;
nexpaq 1:55a6170b404f 163 msg.data[1] = 0xE0 | (channel & 0x0F);
nexpaq 1:55a6170b404f 164 msg.data[2] = p & 0x7F;
nexpaq 1:55a6170b404f 165 msg.data[3] = (p >> 7) & 0x7F;
nexpaq 1:55a6170b404f 166 return msg;
nexpaq 1:55a6170b404f 167 }
nexpaq 1:55a6170b404f 168
nexpaq 1:55a6170b404f 169 /** Create an All Notes Off message
nexpaq 1:55a6170b404f 170 * @param channel Channel (0-15, default 0)
nexpaq 1:55a6170b404f 171 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 172 */
nexpaq 1:55a6170b404f 173 static MIDIMessage AllNotesOff(int channel = 0) {
nexpaq 1:55a6170b404f 174 return ControlChange(123, 0, channel);
nexpaq 1:55a6170b404f 175 }
nexpaq 1:55a6170b404f 176
nexpaq 1:55a6170b404f 177 /** Create a SysEx message
nexpaq 1:55a6170b404f 178 * @param data SysEx data (including 0xF0 .. 0xF7)
nexpaq 1:55a6170b404f 179 * @param len SysEx data length
nexpaq 1:55a6170b404f 180 * @returns A MIDIMessage
nexpaq 1:55a6170b404f 181 */
nexpaq 1:55a6170b404f 182 static MIDIMessage SysEx(uint8_t *data, int len) {
nexpaq 1:55a6170b404f 183 MIDIMessage msg=MIDIMessage(data,len);
nexpaq 1:55a6170b404f 184 return msg;
nexpaq 1:55a6170b404f 185 }
nexpaq 1:55a6170b404f 186
nexpaq 1:55a6170b404f 187 // decode messages
nexpaq 1:55a6170b404f 188
nexpaq 1:55a6170b404f 189 /** MIDI Message Types */
nexpaq 1:55a6170b404f 190 enum MIDIMessageType {
nexpaq 1:55a6170b404f 191 ErrorType,
nexpaq 1:55a6170b404f 192 NoteOffType,
nexpaq 1:55a6170b404f 193 NoteOnType,
nexpaq 1:55a6170b404f 194 PolyphonicAftertouchType,
nexpaq 1:55a6170b404f 195 ControlChangeType,
nexpaq 1:55a6170b404f 196 ProgramChangeType,
nexpaq 1:55a6170b404f 197 ChannelAftertouchType,
nexpaq 1:55a6170b404f 198 PitchWheelType,
nexpaq 1:55a6170b404f 199 AllNotesOffType,
nexpaq 1:55a6170b404f 200 SysExType
nexpaq 1:55a6170b404f 201 };
nexpaq 1:55a6170b404f 202
nexpaq 1:55a6170b404f 203 /** Read the message type
nexpaq 1:55a6170b404f 204 * @returns MIDIMessageType
nexpaq 1:55a6170b404f 205 */
nexpaq 1:55a6170b404f 206 MIDIMessageType type() {
nexpaq 1:55a6170b404f 207 switch((data[1] >> 4) & 0xF) {
nexpaq 1:55a6170b404f 208 case 0x8: return NoteOffType;
nexpaq 1:55a6170b404f 209 case 0x9: return NoteOnType;
nexpaq 1:55a6170b404f 210 case 0xA: return PolyphonicAftertouchType;
nexpaq 1:55a6170b404f 211 case 0xB:
nexpaq 1:55a6170b404f 212 if(controller() < 120) { // standard controllers
nexpaq 1:55a6170b404f 213 return ControlChangeType;
nexpaq 1:55a6170b404f 214 } else if(controller() == 123) {
nexpaq 1:55a6170b404f 215 return AllNotesOffType;
nexpaq 1:55a6170b404f 216 } else {
nexpaq 1:55a6170b404f 217 return ErrorType; // unsupported atm
nexpaq 1:55a6170b404f 218 }
nexpaq 1:55a6170b404f 219 case 0xC: return ProgramChangeType;
nexpaq 1:55a6170b404f 220 case 0xD: return ChannelAftertouchType;
nexpaq 1:55a6170b404f 221 case 0xE: return PitchWheelType;
nexpaq 1:55a6170b404f 222 case 0xF: return SysExType;
nexpaq 1:55a6170b404f 223 default: return ErrorType;
nexpaq 1:55a6170b404f 224 }
nexpaq 1:55a6170b404f 225 }
nexpaq 1:55a6170b404f 226
nexpaq 1:55a6170b404f 227 /** Read the channel number */
nexpaq 1:55a6170b404f 228 int channel() {
nexpaq 1:55a6170b404f 229 return (data[1] & 0x0F);
nexpaq 1:55a6170b404f 230 }
nexpaq 1:55a6170b404f 231
nexpaq 1:55a6170b404f 232 /** Read the key ID */
nexpaq 1:55a6170b404f 233 int key() {
nexpaq 1:55a6170b404f 234 return (data[2] & 0x7F);
nexpaq 1:55a6170b404f 235 }
nexpaq 1:55a6170b404f 236
nexpaq 1:55a6170b404f 237 /** Read the velocity */
nexpaq 1:55a6170b404f 238 int velocity() {
nexpaq 1:55a6170b404f 239 return (data[3] & 0x7F);
nexpaq 1:55a6170b404f 240 }
nexpaq 1:55a6170b404f 241
nexpaq 1:55a6170b404f 242 /** Read the controller value */
nexpaq 1:55a6170b404f 243 int value() {
nexpaq 1:55a6170b404f 244 return (data[3] & 0x7F);
nexpaq 1:55a6170b404f 245 }
nexpaq 1:55a6170b404f 246
nexpaq 1:55a6170b404f 247 /** Read the aftertouch pressure */
nexpaq 1:55a6170b404f 248 int pressure() {
nexpaq 1:55a6170b404f 249 if(type() == PolyphonicAftertouchType) {
nexpaq 1:55a6170b404f 250 return (data[3] & 0x7F);
nexpaq 1:55a6170b404f 251 } else {
nexpaq 1:55a6170b404f 252 return (data[2] & 0x7F);
nexpaq 1:55a6170b404f 253 }
nexpaq 1:55a6170b404f 254 }
nexpaq 1:55a6170b404f 255
nexpaq 1:55a6170b404f 256 /** Read the controller number */
nexpaq 1:55a6170b404f 257 int controller() {
nexpaq 1:55a6170b404f 258 return (data[2] & 0x7F);
nexpaq 1:55a6170b404f 259 }
nexpaq 1:55a6170b404f 260
nexpaq 1:55a6170b404f 261 /** Read the program number */
nexpaq 1:55a6170b404f 262 int program() {
nexpaq 1:55a6170b404f 263 return (data[2] & 0x7F);
nexpaq 1:55a6170b404f 264 }
nexpaq 1:55a6170b404f 265
nexpaq 1:55a6170b404f 266 /** Read the pitch value */
nexpaq 1:55a6170b404f 267 int pitch() {
nexpaq 1:55a6170b404f 268 int p = ((data[3] & 0x7F) << 7) | (data[2] & 0x7F);
nexpaq 1:55a6170b404f 269 return p - 8192; // 0 - 16383, 8192 is center
nexpaq 1:55a6170b404f 270 }
nexpaq 1:55a6170b404f 271
nexpaq 1:55a6170b404f 272 uint8_t data[MAX_MIDI_MESSAGE_SIZE+1];
nexpaq 1:55a6170b404f 273 uint8_t length;
nexpaq 1:55a6170b404f 274 };
nexpaq 1:55a6170b404f 275
nexpaq 1:55a6170b404f 276 #endif