Martin Kojtal / USBDevice

a

Dependents:   WIRELESS_MOUSE_RX

Fork of USBDevice by mbed official

USBMIDI/MIDIMessage.h@71:53949e6131f6, 2017-07-27 (annotated)

Committer:
Kojto
Date:
Thu Jul 27 12:14:04 2017 +0100
Revision:
71:53949e6131f6
Parent:
50:a3c50882f2c5 
Update libraries



Fixes the previous commmit, as some devices were not copied. USBDevice contains

now targets directory with all targets implementations

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:80ab0d068708 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 1:80ab0d068708 2 *
samux 1:80ab0d068708 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:80ab0d068708 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 1:80ab0d068708 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 1:80ab0d068708 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 1:80ab0d068708 7 * Software is furnished to do so, subject to the following conditions:
samux 1:80ab0d068708 8 *
samux 1:80ab0d068708 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:80ab0d068708 10 * substantial portions of the Software.
samux 1:80ab0d068708 11 *
samux 1:80ab0d068708 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:80ab0d068708 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:80ab0d068708 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:80ab0d068708 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:80ab0d068708 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:80ab0d068708 17 */
samux 1:80ab0d068708 18
samux 1:80ab0d068708 19 #ifndef MIDIMESSAGE_H
samux 1:80ab0d068708 20 #define MIDIMESSAGE_H
samux 1:80ab0d068708 21
samux 1:80ab0d068708 22 #include "mbed.h"
samux 1:80ab0d068708 23
mbed_official 48:03f8e580579a 24 #define MAX_MIDI_MESSAGE_SIZE 256 // Max message size. SysEx can be up to 65536 but 256 should be fine for most usage
mbed_official 48:03f8e580579a 25
samux 1:80ab0d068708 26 // MIDI Message Format
mbed_official 25:7c72828865f3 27 //
samux 1:80ab0d068708 28 // [ msg(4) | channel(4) ] [ 0 | n(7) ] [ 0 | m(7) ]
samux 1:80ab0d068708 29 //
samux 1:80ab0d068708 30 // MIDI Data Messages (Channel Specific)
samux 1:80ab0d068708 31 //
samux 1:80ab0d068708 32 // Message msg n m
samux 1:80ab0d068708 33 // ---------------------------------------------
samux 1:80ab0d068708 34 // Note Off 0x8 Key Velocity
samux 1:80ab0d068708 35 // Note On 0x9 Key Velocity
samux 1:80ab0d068708 36 // Polyphonic Aftertouch 0xA Key Pressure
samux 1:80ab0d068708 37 // Control Change 0xB Controller Value
samux 1:80ab0d068708 38 // Program Change 0xC Program -
samux 1:80ab0d068708 39 // Channel Aftertouch 0xD Pressure -
samux 1:80ab0d068708 40 // Pitch Wheel 0xE LSB MSB
samux 1:80ab0d068708 41
samux 1:80ab0d068708 42 #define CABLE_NUM (0<<4)
samux 1:80ab0d068708 43
samux 1:80ab0d068708 44 /** A MIDI message container */
samux 1:80ab0d068708 45 class MIDIMessage {
samux 1:80ab0d068708 46 public:
mbed_official 50:a3c50882f2c5 47 MIDIMessage() : length(4) {}
mbed_official 25:7c72828865f3 48
mbed_official 50:a3c50882f2c5 49 MIDIMessage(uint8_t *buf) : length(4) {
bogdanm 11:eeb3cbbaa996 50 for (int i = 0; i < 4; i++)
bogdanm 11:eeb3cbbaa996 51 data[i] = buf[i];
samux 1:80ab0d068708 52 }
mbed_official 25:7c72828865f3 53
mbed_official 48:03f8e580579a 54 // New constructor, buf is a true MIDI message (not USBMidi message) and buf_len true message length.
mbed_official 48:03f8e580579a 55 MIDIMessage(uint8_t *buf, int buf_len) {
mbed_official 48:03f8e580579a 56 length=buf_len+1;
mbed_official 48:03f8e580579a 57 // first byte keeped for retro-compatibility
mbed_official 48:03f8e580579a 58 data[0]=0;
mbed_official 48:03f8e580579a 59
mbed_official 48:03f8e580579a 60 for (int i = 0; i < buf_len; i++)
mbed_official 48:03f8e580579a 61 data[i+1] = buf[i];
mbed_official 48:03f8e580579a 62 }
mbed_official 48:03f8e580579a 63
samux 1:80ab0d068708 64 // create messages
mbed_official 25:7c72828865f3 65
mbed_official 25:7c72828865f3 66 /** Create a NoteOff message
samux 1:80ab0d068708 67 * @param key Key ID
samux 1:80ab0d068708 68 * @param velocity Key velocity (0-127, default = 127)
samux 1:80ab0d068708 69 * @param channel Key channel (0-15, default 0)
samux 1:80ab0d068708 70 * @returns A MIDIMessage
samux 1:80ab0d068708 71 */
samux 1:80ab0d068708 72 static MIDIMessage NoteOff(int key, int velocity = 127, int channel = 0) {
samux 1:80ab0d068708 73 MIDIMessage msg;
samux 1:80ab0d068708 74 msg.data[0] = CABLE_NUM | 0x08;
samux 1:80ab0d068708 75 msg.data[1] = 0x80 | (channel & 0x0F);
samux 1:80ab0d068708 76 msg.data[2] = key & 0x7F;
mbed_official 25:7c72828865f3 77 msg.data[3] = velocity & 0x7F;
samux 1:80ab0d068708 78 return msg;
samux 1:80ab0d068708 79 }
mbed_official 25:7c72828865f3 80
mbed_official 25:7c72828865f3 81 /** Create a NoteOn message
samux 1:80ab0d068708 82 * @param key Key ID
samux 1:80ab0d068708 83 * @param velocity Key velocity (0-127, default = 127)
samux 1:80ab0d068708 84 * @param channel Key channel (0-15, default 0)
samux 1:80ab0d068708 85 * @returns A MIDIMessage
samux 1:80ab0d068708 86 */
samux 1:80ab0d068708 87 static MIDIMessage NoteOn(int key, int velocity = 127, int channel = 0) {
samux 1:80ab0d068708 88 MIDIMessage msg;
samux 1:80ab0d068708 89 msg.data[0] = CABLE_NUM | 0x09;
samux 1:80ab0d068708 90 msg.data[1] = 0x90 | (channel & 0x0F);
samux 1:80ab0d068708 91 msg.data[2] = key & 0x7F;
mbed_official 25:7c72828865f3 92 msg.data[3] = velocity & 0x7F;
samux 1:80ab0d068708 93 return msg;
samux 1:80ab0d068708 94 }
mbed_official 25:7c72828865f3 95
mbed_official 25:7c72828865f3 96 /** Create a PolyPhonic Aftertouch message
samux 1:80ab0d068708 97 * @param key Key ID
samux 1:80ab0d068708 98 * @param pressure Aftertouch pressure (0-127)
samux 1:80ab0d068708 99 * @param channel Key channel (0-15, default 0)
samux 1:80ab0d068708 100 * @returns A MIDIMessage
mbed_official 25:7c72828865f3 101 */
samux 1:80ab0d068708 102 static MIDIMessage PolyphonicAftertouch(int key, int pressure, int channel = 0) {
samux 1:80ab0d068708 103 MIDIMessage msg;
samux 1:80ab0d068708 104 msg.data[0] = CABLE_NUM | 0x0A;
samux 1:80ab0d068708 105 msg.data[1] = 0xA0 | (channel & 0x0F);
samux 1:80ab0d068708 106 msg.data[2] = key & 0x7F;
mbed_official 25:7c72828865f3 107 msg.data[3] = pressure & 0x7F;
samux 1:80ab0d068708 108 return msg;
samux 1:80ab0d068708 109 }
mbed_official 25:7c72828865f3 110
mbed_official 25:7c72828865f3 111 /** Create a Control Change message
samux 1:80ab0d068708 112 * @param control Controller ID
samux 1:80ab0d068708 113 * @param value Controller value (0-127)
samux 1:80ab0d068708 114 * @param channel Controller channel (0-15, default 0)
samux 1:80ab0d068708 115 * @returns A MIDIMessage
samux 1:80ab0d068708 116 */
samux 1:80ab0d068708 117 static MIDIMessage ControlChange(int control, int value, int channel = 0) {
samux 1:80ab0d068708 118 MIDIMessage msg;
samux 1:80ab0d068708 119 msg.data[0] = CABLE_NUM | 0x0B;
samux 1:80ab0d068708 120 msg.data[1] = 0xB0 | (channel & 0x0F);
samux 1:80ab0d068708 121 msg.data[2] = control & 0x7F;
mbed_official 25:7c72828865f3 122 msg.data[3] = value & 0x7F;
samux 1:80ab0d068708 123 return msg;
samux 1:80ab0d068708 124 }
mbed_official 25:7c72828865f3 125
mbed_official 25:7c72828865f3 126 /** Create a Program Change message
samux 1:80ab0d068708 127 * @param program Program ID
samux 1:80ab0d068708 128 * @param channel Channel (0-15, default 0)
samux 1:80ab0d068708 129 * @returns A MIDIMessage
mbed_official 25:7c72828865f3 130 */
samux 1:80ab0d068708 131 static MIDIMessage ProgramChange(int program, int channel = 0) {
samux 1:80ab0d068708 132 MIDIMessage msg;
samux 1:80ab0d068708 133 msg.data[0] = CABLE_NUM | 0x0C;
samux 1:80ab0d068708 134 msg.data[1] = 0xC0 | (channel & 0x0F);
samux 1:80ab0d068708 135 msg.data[2] = program & 0x7F;
mbed_official 25:7c72828865f3 136 msg.data[3] = 0x00;
samux 1:80ab0d068708 137 return msg;
samux 1:80ab0d068708 138 }
mbed_official 25:7c72828865f3 139
mbed_official 25:7c72828865f3 140 /** Create a Channel Aftertouch message
mbed_official 25:7c72828865f3 141 * @param pressure Pressure
samux 1:80ab0d068708 142 * @param channel Key channel (0-15, default 0)
samux 1:80ab0d068708 143 * @returns A MIDIMessage
mbed_official 25:7c72828865f3 144 */
samux 1:80ab0d068708 145 static MIDIMessage ChannelAftertouch(int pressure, int channel = 0) {
samux 1:80ab0d068708 146 MIDIMessage msg;
samux 1:80ab0d068708 147 msg.data[0] = CABLE_NUM | 0x0D;
samux 1:80ab0d068708 148 msg.data[1] = 0xD0 | (channel & 0x0F);
samux 1:80ab0d068708 149 msg.data[2] = pressure & 0x7F;
mbed_official 25:7c72828865f3 150 msg.data[3] = 0x00;
samux 1:80ab0d068708 151 return msg;
samux 1:80ab0d068708 152 }
mbed_official 25:7c72828865f3 153
mbed_official 25:7c72828865f3 154 /** Create a Pitch Wheel message
samux 1:80ab0d068708 155 * @param pitch Pitch (-8192 - 8191, default = 0)
samux 1:80ab0d068708 156 * @param channel Channel (0-15, default 0)
samux 1:80ab0d068708 157 * @returns A MIDIMessage
mbed_official 25:7c72828865f3 158 */
samux 1:80ab0d068708 159 static MIDIMessage PitchWheel(int pitch = 0, int channel = 0) {
samux 1:80ab0d068708 160 MIDIMessage msg;
samux 1:80ab0d068708 161 int p = pitch + 8192; // 0 - 16383, 8192 is center
samux 1:80ab0d068708 162 msg.data[0] = CABLE_NUM | 0x0E;
samux 1:80ab0d068708 163 msg.data[1] = 0xE0 | (channel & 0x0F);
samux 1:80ab0d068708 164 msg.data[2] = p & 0x7F;
mbed_official 25:7c72828865f3 165 msg.data[3] = (p >> 7) & 0x7F;
samux 1:80ab0d068708 166 return msg;
samux 1:80ab0d068708 167 }
mbed_official 25:7c72828865f3 168
mbed_official 25:7c72828865f3 169 /** Create an All Notes Off message
samux 1:80ab0d068708 170 * @param channel Channel (0-15, default 0)
samux 1:80ab0d068708 171 * @returns A MIDIMessage
mbed_official 25:7c72828865f3 172 */
samux 1:80ab0d068708 173 static MIDIMessage AllNotesOff(int channel = 0) {
samux 1:80ab0d068708 174 return ControlChange(123, 0, channel);
samux 1:80ab0d068708 175 }
mbed_official 25:7c72828865f3 176
mbed_official 48:03f8e580579a 177 /** Create a SysEx message
mbed_official 48:03f8e580579a 178 * @param data SysEx data (including 0xF0 .. 0xF7)
mbed_official 48:03f8e580579a 179 * @param len SysEx data length
mbed_official 48:03f8e580579a 180 * @returns A MIDIMessage
mbed_official 48:03f8e580579a 181 */
mbed_official 48:03f8e580579a 182 static MIDIMessage SysEx(uint8_t *data, int len) {
mbed_official 48:03f8e580579a 183 MIDIMessage msg=MIDIMessage(data,len);
mbed_official 48:03f8e580579a 184 return msg;
mbed_official 48:03f8e580579a 185 }
mbed_official 48:03f8e580579a 186
samux 1:80ab0d068708 187 // decode messages
mbed_official 25:7c72828865f3 188
samux 1:80ab0d068708 189 /** MIDI Message Types */
samux 1:80ab0d068708 190 enum MIDIMessageType {
samux 1:80ab0d068708 191 ErrorType,
samux 1:80ab0d068708 192 NoteOffType,
samux 1:80ab0d068708 193 NoteOnType,
samux 1:80ab0d068708 194 PolyphonicAftertouchType,
samux 1:80ab0d068708 195 ControlChangeType,
samux 1:80ab0d068708 196 ProgramChangeType,
samux 1:80ab0d068708 197 ChannelAftertouchType,
samux 1:80ab0d068708 198 PitchWheelType,
mbed_official 48:03f8e580579a 199 AllNotesOffType,
mbed_official 48:03f8e580579a 200 SysExType
samux 1:80ab0d068708 201 };
mbed_official 25:7c72828865f3 202
samux 1:80ab0d068708 203 /** Read the message type
samux 1:80ab0d068708 204 * @returns MIDIMessageType
mbed_official 25:7c72828865f3 205 */
samux 1:80ab0d068708 206 MIDIMessageType type() {
samux 1:80ab0d068708 207 switch((data[1] >> 4) & 0xF) {
samux 1:80ab0d068708 208 case 0x8: return NoteOffType;
samux 1:80ab0d068708 209 case 0x9: return NoteOnType;
samux 1:80ab0d068708 210 case 0xA: return PolyphonicAftertouchType;
mbed_official 25:7c72828865f3 211 case 0xB:
samux 1:80ab0d068708 212 if(controller() < 120) { // standard controllers
samux 1:80ab0d068708 213 return ControlChangeType;
samux 1:80ab0d068708 214 } else if(controller() == 123) {
samux 1:80ab0d068708 215 return AllNotesOffType;
samux 1:80ab0d068708 216 } else {
samux 1:80ab0d068708 217 return ErrorType; // unsupported atm
samux 1:80ab0d068708 218 }
samux 1:80ab0d068708 219 case 0xC: return ProgramChangeType;
samux 1:80ab0d068708 220 case 0xD: return ChannelAftertouchType;
samux 1:80ab0d068708 221 case 0xE: return PitchWheelType;
mbed_official 48:03f8e580579a 222 case 0xF: return SysExType;
samux 1:80ab0d068708 223 default: return ErrorType;
samux 1:80ab0d068708 224 }
samux 1:80ab0d068708 225 }
samux 1:80ab0d068708 226
mbed_official 25:7c72828865f3 227 /** Read the channel number */
samux 1:80ab0d068708 228 int channel() {
samux 1:80ab0d068708 229 return (data[1] & 0x0F);
samux 1:80ab0d068708 230 }
mbed_official 25:7c72828865f3 231
mbed_official 25:7c72828865f3 232 /** Read the key ID */
samux 1:80ab0d068708 233 int key() {
mbed_official 25:7c72828865f3 234 return (data[2] & 0x7F);
samux 1:80ab0d068708 235 }
mbed_official 25:7c72828865f3 236
mbed_official 25:7c72828865f3 237 /** Read the velocity */
samux 1:80ab0d068708 238 int velocity() {
mbed_official 25:7c72828865f3 239 return (data[3] & 0x7F);
samux 1:80ab0d068708 240 }
samux 1:80ab0d068708 241
mbed_official 25:7c72828865f3 242 /** Read the controller value */
samux 1:80ab0d068708 243 int value() {
mbed_official 25:7c72828865f3 244 return (data[3] & 0x7F);
samux 1:80ab0d068708 245 }
mbed_official 25:7c72828865f3 246
mbed_official 25:7c72828865f3 247 /** Read the aftertouch pressure */
samux 1:80ab0d068708 248 int pressure() {
samux 1:80ab0d068708 249 if(type() == PolyphonicAftertouchType) {
mbed_official 25:7c72828865f3 250 return (data[3] & 0x7F);
samux 1:80ab0d068708 251 } else {
mbed_official 25:7c72828865f3 252 return (data[2] & 0x7F);
samux 1:80ab0d068708 253 }
samux 1:80ab0d068708 254 }
samux 1:80ab0d068708 255
mbed_official 25:7c72828865f3 256 /** Read the controller number */
samux 1:80ab0d068708 257 int controller() {
mbed_official 25:7c72828865f3 258 return (data[2] & 0x7F);
samux 1:80ab0d068708 259 }
samux 1:80ab0d068708 260
mbed_official 25:7c72828865f3 261 /** Read the program number */
samux 1:80ab0d068708 262 int program() {
mbed_official 25:7c72828865f3 263 return (data[2] & 0x7F);
samux 1:80ab0d068708 264 }
mbed_official 25:7c72828865f3 265
mbed_official 25:7c72828865f3 266 /** Read the pitch value */
samux 1:80ab0d068708 267 int pitch() {
samux 1:80ab0d068708 268 int p = ((data[3] & 0x7F) << 7) | (data[2] & 0x7F);
samux 1:80ab0d068708 269 return p - 8192; // 0 - 16383, 8192 is center
samux 1:80ab0d068708 270 }
mbed_official 25:7c72828865f3 271
mbed_official 48:03f8e580579a 272 uint8_t data[MAX_MIDI_MESSAGE_SIZE+1];
mbed_official 50:a3c50882f2c5 273 uint8_t length;
bogdanm 11:eeb3cbbaa996 274 };
samux 1:80ab0d068708 275
samux 1:80ab0d068708 276 #endif