goma yam / USBDevice

USBDevice

Dependents:   QEI_X1_LCD_test3 macnica_test

USBMIDI/MIDIMessage.h@0:2d8d0b73e1ff, 2013-04-18 (annotated)

Committer:
toucyy
Date:
Thu Apr 18 07:49:37 2013 +0000
Revision:
0:2d8d0b73e1ff
[mbed] converted /QEI_HelloWorld/USBDevice

Who changed what in which revision?

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toucyy 0:2d8d0b73e1ff 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
toucyy 0:2d8d0b73e1ff 2 *
toucyy 0:2d8d0b73e1ff 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
toucyy 0:2d8d0b73e1ff 4 * and associated documentation files (the "Software"), to deal in the Software without
toucyy 0:2d8d0b73e1ff 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
toucyy 0:2d8d0b73e1ff 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
toucyy 0:2d8d0b73e1ff 7 * Software is furnished to do so, subject to the following conditions:
toucyy 0:2d8d0b73e1ff 8 *
toucyy 0:2d8d0b73e1ff 9 * The above copyright notice and this permission notice shall be included in all copies or
toucyy 0:2d8d0b73e1ff 10 * substantial portions of the Software.
toucyy 0:2d8d0b73e1ff 11 *
toucyy 0:2d8d0b73e1ff 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
toucyy 0:2d8d0b73e1ff 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
toucyy 0:2d8d0b73e1ff 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
toucyy 0:2d8d0b73e1ff 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
toucyy 0:2d8d0b73e1ff 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
toucyy 0:2d8d0b73e1ff 17 */
toucyy 0:2d8d0b73e1ff 18
toucyy 0:2d8d0b73e1ff 19 #ifndef MIDIMESSAGE_H
toucyy 0:2d8d0b73e1ff 20 #define MIDIMESSAGE_H
toucyy 0:2d8d0b73e1ff 21
toucyy 0:2d8d0b73e1ff 22 #include "mbed.h"
toucyy 0:2d8d0b73e1ff 23
toucyy 0:2d8d0b73e1ff 24 // MIDI Message Format
toucyy 0:2d8d0b73e1ff 25 //
toucyy 0:2d8d0b73e1ff 26 // [ msg(4) | channel(4) ] [ 0 | n(7) ] [ 0 | m(7) ]
toucyy 0:2d8d0b73e1ff 27 //
toucyy 0:2d8d0b73e1ff 28 // MIDI Data Messages (Channel Specific)
toucyy 0:2d8d0b73e1ff 29 //
toucyy 0:2d8d0b73e1ff 30 // Message msg n m
toucyy 0:2d8d0b73e1ff 31 // ---------------------------------------------
toucyy 0:2d8d0b73e1ff 32 // Note Off 0x8 Key Velocity
toucyy 0:2d8d0b73e1ff 33 // Note On 0x9 Key Velocity
toucyy 0:2d8d0b73e1ff 34 // Polyphonic Aftertouch 0xA Key Pressure
toucyy 0:2d8d0b73e1ff 35 // Control Change 0xB Controller Value
toucyy 0:2d8d0b73e1ff 36 // Program Change 0xC Program -
toucyy 0:2d8d0b73e1ff 37 // Channel Aftertouch 0xD Pressure -
toucyy 0:2d8d0b73e1ff 38 // Pitch Wheel 0xE LSB MSB
toucyy 0:2d8d0b73e1ff 39
toucyy 0:2d8d0b73e1ff 40 #define CABLE_NUM (0<<4)
toucyy 0:2d8d0b73e1ff 41
toucyy 0:2d8d0b73e1ff 42 /** A MIDI message container */
toucyy 0:2d8d0b73e1ff 43 class MIDIMessage {
toucyy 0:2d8d0b73e1ff 44 public:
toucyy 0:2d8d0b73e1ff 45 MIDIMessage() {}
toucyy 0:2d8d0b73e1ff 46
toucyy 0:2d8d0b73e1ff 47 MIDIMessage(uint8_t *buf) {
toucyy 0:2d8d0b73e1ff 48 *((uint32_t *)data) = *((uint32_t *)buf);
toucyy 0:2d8d0b73e1ff 49 }
toucyy 0:2d8d0b73e1ff 50
toucyy 0:2d8d0b73e1ff 51 // create messages
toucyy 0:2d8d0b73e1ff 52
toucyy 0:2d8d0b73e1ff 53 /** Create a NoteOff message
toucyy 0:2d8d0b73e1ff 54 * @param key Key ID
toucyy 0:2d8d0b73e1ff 55 * @param velocity Key velocity (0-127, default = 127)
toucyy 0:2d8d0b73e1ff 56 * @param channel Key channel (0-15, default 0)
toucyy 0:2d8d0b73e1ff 57 * @returns A MIDIMessage
toucyy 0:2d8d0b73e1ff 58 */
toucyy 0:2d8d0b73e1ff 59 static MIDIMessage NoteOff(int key, int velocity = 127, int channel = 0) {
toucyy 0:2d8d0b73e1ff 60 MIDIMessage msg;
toucyy 0:2d8d0b73e1ff 61 msg.data[0] = CABLE_NUM | 0x08;
toucyy 0:2d8d0b73e1ff 62 msg.data[1] = 0x80 | (channel & 0x0F);
toucyy 0:2d8d0b73e1ff 63 msg.data[2] = key & 0x7F;
toucyy 0:2d8d0b73e1ff 64 msg.data[3] = velocity & 0x7F;
toucyy 0:2d8d0b73e1ff 65 return msg;
toucyy 0:2d8d0b73e1ff 66 }
toucyy 0:2d8d0b73e1ff 67
toucyy 0:2d8d0b73e1ff 68 /** Create a NoteOn message
toucyy 0:2d8d0b73e1ff 69 * @param key Key ID
toucyy 0:2d8d0b73e1ff 70 * @param velocity Key velocity (0-127, default = 127)
toucyy 0:2d8d0b73e1ff 71 * @param channel Key channel (0-15, default 0)
toucyy 0:2d8d0b73e1ff 72 * @returns A MIDIMessage
toucyy 0:2d8d0b73e1ff 73 */
toucyy 0:2d8d0b73e1ff 74 static MIDIMessage NoteOn(int key, int velocity = 127, int channel = 0) {
toucyy 0:2d8d0b73e1ff 75 MIDIMessage msg;
toucyy 0:2d8d0b73e1ff 76 msg.data[0] = CABLE_NUM | 0x09;
toucyy 0:2d8d0b73e1ff 77 msg.data[1] = 0x90 | (channel & 0x0F);
toucyy 0:2d8d0b73e1ff 78 msg.data[2] = key & 0x7F;
toucyy 0:2d8d0b73e1ff 79 msg.data[3] = velocity & 0x7F;
toucyy 0:2d8d0b73e1ff 80 return msg;
toucyy 0:2d8d0b73e1ff 81 }
toucyy 0:2d8d0b73e1ff 82
toucyy 0:2d8d0b73e1ff 83 /** Create a PolyPhonic Aftertouch message
toucyy 0:2d8d0b73e1ff 84 * @param key Key ID
toucyy 0:2d8d0b73e1ff 85 * @param pressure Aftertouch pressure (0-127)
toucyy 0:2d8d0b73e1ff 86 * @param channel Key channel (0-15, default 0)
toucyy 0:2d8d0b73e1ff 87 * @returns A MIDIMessage
toucyy 0:2d8d0b73e1ff 88 */
toucyy 0:2d8d0b73e1ff 89 static MIDIMessage PolyphonicAftertouch(int key, int pressure, int channel = 0) {
toucyy 0:2d8d0b73e1ff 90 MIDIMessage msg;
toucyy 0:2d8d0b73e1ff 91 msg.data[0] = CABLE_NUM | 0x0A;
toucyy 0:2d8d0b73e1ff 92 msg.data[1] = 0xA0 | (channel & 0x0F);
toucyy 0:2d8d0b73e1ff 93 msg.data[2] = key & 0x7F;
toucyy 0:2d8d0b73e1ff 94 msg.data[3] = pressure & 0x7F;
toucyy 0:2d8d0b73e1ff 95 return msg;
toucyy 0:2d8d0b73e1ff 96 }
toucyy 0:2d8d0b73e1ff 97
toucyy 0:2d8d0b73e1ff 98 /** Create a Control Change message
toucyy 0:2d8d0b73e1ff 99 * @param control Controller ID
toucyy 0:2d8d0b73e1ff 100 * @param value Controller value (0-127)
toucyy 0:2d8d0b73e1ff 101 * @param channel Controller channel (0-15, default 0)
toucyy 0:2d8d0b73e1ff 102 * @returns A MIDIMessage
toucyy 0:2d8d0b73e1ff 103 */
toucyy 0:2d8d0b73e1ff 104 static MIDIMessage ControlChange(int control, int value, int channel = 0) {
toucyy 0:2d8d0b73e1ff 105 MIDIMessage msg;
toucyy 0:2d8d0b73e1ff 106 msg.data[0] = CABLE_NUM | 0x0B;
toucyy 0:2d8d0b73e1ff 107 msg.data[1] = 0xB0 | (channel & 0x0F);
toucyy 0:2d8d0b73e1ff 108 msg.data[2] = control & 0x7F;
toucyy 0:2d8d0b73e1ff 109 msg.data[3] = value & 0x7F;
toucyy 0:2d8d0b73e1ff 110 return msg;
toucyy 0:2d8d0b73e1ff 111 }
toucyy 0:2d8d0b73e1ff 112
toucyy 0:2d8d0b73e1ff 113 /** Create a Program Change message
toucyy 0:2d8d0b73e1ff 114 * @param program Program ID
toucyy 0:2d8d0b73e1ff 115 * @param channel Channel (0-15, default 0)
toucyy 0:2d8d0b73e1ff 116 * @returns A MIDIMessage
toucyy 0:2d8d0b73e1ff 117 */
toucyy 0:2d8d0b73e1ff 118 static MIDIMessage ProgramChange(int program, int channel = 0) {
toucyy 0:2d8d0b73e1ff 119 MIDIMessage msg;
toucyy 0:2d8d0b73e1ff 120 msg.data[0] = CABLE_NUM | 0x0C;
toucyy 0:2d8d0b73e1ff 121 msg.data[1] = 0xC0 | (channel & 0x0F);
toucyy 0:2d8d0b73e1ff 122 msg.data[2] = program & 0x7F;
toucyy 0:2d8d0b73e1ff 123 msg.data[3] = 0x00;
toucyy 0:2d8d0b73e1ff 124 return msg;
toucyy 0:2d8d0b73e1ff 125 }
toucyy 0:2d8d0b73e1ff 126
toucyy 0:2d8d0b73e1ff 127 /** Create a Channel Aftertouch message
toucyy 0:2d8d0b73e1ff 128 * @param pressure Pressure
toucyy 0:2d8d0b73e1ff 129 * @param channel Key channel (0-15, default 0)
toucyy 0:2d8d0b73e1ff 130 * @returns A MIDIMessage
toucyy 0:2d8d0b73e1ff 131 */
toucyy 0:2d8d0b73e1ff 132 static MIDIMessage ChannelAftertouch(int pressure, int channel = 0) {
toucyy 0:2d8d0b73e1ff 133 MIDIMessage msg;
toucyy 0:2d8d0b73e1ff 134 msg.data[0] = CABLE_NUM | 0x0D;
toucyy 0:2d8d0b73e1ff 135 msg.data[1] = 0xD0 | (channel & 0x0F);
toucyy 0:2d8d0b73e1ff 136 msg.data[2] = pressure & 0x7F;
toucyy 0:2d8d0b73e1ff 137 msg.data[3] = 0x00;
toucyy 0:2d8d0b73e1ff 138 return msg;
toucyy 0:2d8d0b73e1ff 139 }
toucyy 0:2d8d0b73e1ff 140
toucyy 0:2d8d0b73e1ff 141 /** Create a Pitch Wheel message
toucyy 0:2d8d0b73e1ff 142 * @param pitch Pitch (-8192 - 8191, default = 0)
toucyy 0:2d8d0b73e1ff 143 * @param channel Channel (0-15, default 0)
toucyy 0:2d8d0b73e1ff 144 * @returns A MIDIMessage
toucyy 0:2d8d0b73e1ff 145 */
toucyy 0:2d8d0b73e1ff 146 static MIDIMessage PitchWheel(int pitch = 0, int channel = 0) {
toucyy 0:2d8d0b73e1ff 147 MIDIMessage msg;
toucyy 0:2d8d0b73e1ff 148 int p = pitch + 8192; // 0 - 16383, 8192 is center
toucyy 0:2d8d0b73e1ff 149 msg.data[0] = CABLE_NUM | 0x0E;
toucyy 0:2d8d0b73e1ff 150 msg.data[1] = 0xE0 | (channel & 0x0F);
toucyy 0:2d8d0b73e1ff 151 msg.data[2] = p & 0x7F;
toucyy 0:2d8d0b73e1ff 152 msg.data[3] = (p >> 7) & 0x7F;
toucyy 0:2d8d0b73e1ff 153 return msg;
toucyy 0:2d8d0b73e1ff 154 }
toucyy 0:2d8d0b73e1ff 155
toucyy 0:2d8d0b73e1ff 156 /** Create an All Notes Off message
toucyy 0:2d8d0b73e1ff 157 * @param channel Channel (0-15, default 0)
toucyy 0:2d8d0b73e1ff 158 * @returns A MIDIMessage
toucyy 0:2d8d0b73e1ff 159 */
toucyy 0:2d8d0b73e1ff 160 static MIDIMessage AllNotesOff(int channel = 0) {
toucyy 0:2d8d0b73e1ff 161 return ControlChange(123, 0, channel);
toucyy 0:2d8d0b73e1ff 162 }
toucyy 0:2d8d0b73e1ff 163
toucyy 0:2d8d0b73e1ff 164 // decode messages
toucyy 0:2d8d0b73e1ff 165
toucyy 0:2d8d0b73e1ff 166 /** MIDI Message Types */
toucyy 0:2d8d0b73e1ff 167 enum MIDIMessageType {
toucyy 0:2d8d0b73e1ff 168 ErrorType,
toucyy 0:2d8d0b73e1ff 169 NoteOffType,
toucyy 0:2d8d0b73e1ff 170 NoteOnType,
toucyy 0:2d8d0b73e1ff 171 PolyphonicAftertouchType,
toucyy 0:2d8d0b73e1ff 172 ControlChangeType,
toucyy 0:2d8d0b73e1ff 173 ProgramChangeType,
toucyy 0:2d8d0b73e1ff 174 ChannelAftertouchType,
toucyy 0:2d8d0b73e1ff 175 PitchWheelType,
toucyy 0:2d8d0b73e1ff 176 AllNotesOffType
toucyy 0:2d8d0b73e1ff 177 };
toucyy 0:2d8d0b73e1ff 178
toucyy 0:2d8d0b73e1ff 179 /** Read the message type
toucyy 0:2d8d0b73e1ff 180 * @returns MIDIMessageType
toucyy 0:2d8d0b73e1ff 181 */
toucyy 0:2d8d0b73e1ff 182 MIDIMessageType type() {
toucyy 0:2d8d0b73e1ff 183 switch((data[1] >> 4) & 0xF) {
toucyy 0:2d8d0b73e1ff 184 case 0x8: return NoteOffType;
toucyy 0:2d8d0b73e1ff 185 case 0x9: return NoteOnType;
toucyy 0:2d8d0b73e1ff 186 case 0xA: return PolyphonicAftertouchType;
toucyy 0:2d8d0b73e1ff 187 case 0xB:
toucyy 0:2d8d0b73e1ff 188 if(controller() < 120) { // standard controllers
toucyy 0:2d8d0b73e1ff 189 return ControlChangeType;
toucyy 0:2d8d0b73e1ff 190 } else if(controller() == 123) {
toucyy 0:2d8d0b73e1ff 191 return AllNotesOffType;
toucyy 0:2d8d0b73e1ff 192 } else {
toucyy 0:2d8d0b73e1ff 193 return ErrorType; // unsupported atm
toucyy 0:2d8d0b73e1ff 194 }
toucyy 0:2d8d0b73e1ff 195 case 0xC: return ProgramChangeType;
toucyy 0:2d8d0b73e1ff 196 case 0xD: return ChannelAftertouchType;
toucyy 0:2d8d0b73e1ff 197 case 0xE: return PitchWheelType;
toucyy 0:2d8d0b73e1ff 198 default: return ErrorType;
toucyy 0:2d8d0b73e1ff 199 }
toucyy 0:2d8d0b73e1ff 200 }
toucyy 0:2d8d0b73e1ff 201
toucyy 0:2d8d0b73e1ff 202 /** Read the channel number */
toucyy 0:2d8d0b73e1ff 203 int channel() {
toucyy 0:2d8d0b73e1ff 204 return (data[1] & 0x0F);
toucyy 0:2d8d0b73e1ff 205 }
toucyy 0:2d8d0b73e1ff 206
toucyy 0:2d8d0b73e1ff 207 /** Read the key ID */
toucyy 0:2d8d0b73e1ff 208 int key() {
toucyy 0:2d8d0b73e1ff 209 return (data[2] & 0x7F);
toucyy 0:2d8d0b73e1ff 210 }
toucyy 0:2d8d0b73e1ff 211
toucyy 0:2d8d0b73e1ff 212 /** Read the velocity */
toucyy 0:2d8d0b73e1ff 213 int velocity() {
toucyy 0:2d8d0b73e1ff 214 return (data[3] & 0x7F);
toucyy 0:2d8d0b73e1ff 215 }
toucyy 0:2d8d0b73e1ff 216
toucyy 0:2d8d0b73e1ff 217 /** Read the controller value */
toucyy 0:2d8d0b73e1ff 218 int value() {
toucyy 0:2d8d0b73e1ff 219 return (data[3] & 0x7F);
toucyy 0:2d8d0b73e1ff 220 }
toucyy 0:2d8d0b73e1ff 221
toucyy 0:2d8d0b73e1ff 222 /** Read the aftertouch pressure */
toucyy 0:2d8d0b73e1ff 223 int pressure() {
toucyy 0:2d8d0b73e1ff 224 if(type() == PolyphonicAftertouchType) {
toucyy 0:2d8d0b73e1ff 225 return (data[3] & 0x7F);
toucyy 0:2d8d0b73e1ff 226 } else {
toucyy 0:2d8d0b73e1ff 227 return (data[2] & 0x7F);
toucyy 0:2d8d0b73e1ff 228 }
toucyy 0:2d8d0b73e1ff 229 }
toucyy 0:2d8d0b73e1ff 230
toucyy 0:2d8d0b73e1ff 231 /** Read the controller number */
toucyy 0:2d8d0b73e1ff 232 int controller() {
toucyy 0:2d8d0b73e1ff 233 return (data[2] & 0x7F);
toucyy 0:2d8d0b73e1ff 234 }
toucyy 0:2d8d0b73e1ff 235
toucyy 0:2d8d0b73e1ff 236 /** Read the program number */
toucyy 0:2d8d0b73e1ff 237 int program() {
toucyy 0:2d8d0b73e1ff 238 return (data[2] & 0x7F);
toucyy 0:2d8d0b73e1ff 239 }
toucyy 0:2d8d0b73e1ff 240
toucyy 0:2d8d0b73e1ff 241 /** Read the pitch value */
toucyy 0:2d8d0b73e1ff 242 int pitch() {
toucyy 0:2d8d0b73e1ff 243 int p = ((data[3] & 0x7F) << 7) | (data[2] & 0x7F);
toucyy 0:2d8d0b73e1ff 244 return p - 8192; // 0 - 16383, 8192 is center
toucyy 0:2d8d0b73e1ff 245 }
toucyy 0:2d8d0b73e1ff 246
toucyy 0:2d8d0b73e1ff 247 uint8_t data[4];
toucyy 0:2d8d0b73e1ff 248 };
toucyy 0:2d8d0b73e1ff 249
toucyy 0:2d8d0b73e1ff 250 #endif