Erik - / Mbed 2 deprecated USBFileSystem_RAMDISK_HelloWorld

RAMDisk example for the USBFileSystem

Dependencies:   mbed USBFileSystem

Fork of USBFileSystem_RAMDISK_HelloWorld by Erik -

USBDevice/USBMIDI/MIDIMessage.h@1:e1b0157ce547, 2013-07-30 (annotated)

Committer:
Sissors
Date:
Tue Jul 30 18:27:18 2013 +0000
Revision:
1:e1b0157ce547
Memory leaks -_-

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 1:e1b0157ce547 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
Sissors 1:e1b0157ce547 2 *
Sissors 1:e1b0157ce547 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Sissors 1:e1b0157ce547 4 * and associated documentation files (the "Software"), to deal in the Software without
Sissors 1:e1b0157ce547 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Sissors 1:e1b0157ce547 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Sissors 1:e1b0157ce547 7 * Software is furnished to do so, subject to the following conditions:
Sissors 1:e1b0157ce547 8 *
Sissors 1:e1b0157ce547 9 * The above copyright notice and this permission notice shall be included in all copies or
Sissors 1:e1b0157ce547 10 * substantial portions of the Software.
Sissors 1:e1b0157ce547 11 *
Sissors 1:e1b0157ce547 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Sissors 1:e1b0157ce547 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Sissors 1:e1b0157ce547 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Sissors 1:e1b0157ce547 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Sissors 1:e1b0157ce547 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Sissors 1:e1b0157ce547 17 */
Sissors 1:e1b0157ce547 18
Sissors 1:e1b0157ce547 19 #ifndef MIDIMESSAGE_H
Sissors 1:e1b0157ce547 20 #define MIDIMESSAGE_H
Sissors 1:e1b0157ce547 21
Sissors 1:e1b0157ce547 22 #include "mbed.h"
Sissors 1:e1b0157ce547 23
Sissors 1:e1b0157ce547 24 // MIDI Message Format
Sissors 1:e1b0157ce547 25 //
Sissors 1:e1b0157ce547 26 // [ msg(4) | channel(4) ] [ 0 | n(7) ] [ 0 | m(7) ]
Sissors 1:e1b0157ce547 27 //
Sissors 1:e1b0157ce547 28 // MIDI Data Messages (Channel Specific)
Sissors 1:e1b0157ce547 29 //
Sissors 1:e1b0157ce547 30 // Message msg n m
Sissors 1:e1b0157ce547 31 // ---------------------------------------------
Sissors 1:e1b0157ce547 32 // Note Off 0x8 Key Velocity
Sissors 1:e1b0157ce547 33 // Note On 0x9 Key Velocity
Sissors 1:e1b0157ce547 34 // Polyphonic Aftertouch 0xA Key Pressure
Sissors 1:e1b0157ce547 35 // Control Change 0xB Controller Value
Sissors 1:e1b0157ce547 36 // Program Change 0xC Program -
Sissors 1:e1b0157ce547 37 // Channel Aftertouch 0xD Pressure -
Sissors 1:e1b0157ce547 38 // Pitch Wheel 0xE LSB MSB
Sissors 1:e1b0157ce547 39
Sissors 1:e1b0157ce547 40 #define CABLE_NUM (0<<4)
Sissors 1:e1b0157ce547 41
Sissors 1:e1b0157ce547 42 /** A MIDI message container */
Sissors 1:e1b0157ce547 43 class MIDIMessage {
Sissors 1:e1b0157ce547 44 public:
Sissors 1:e1b0157ce547 45 MIDIMessage() {}
Sissors 1:e1b0157ce547 46
Sissors 1:e1b0157ce547 47 MIDIMessage(uint8_t *buf) {
Sissors 1:e1b0157ce547 48 *((uint32_t *)data) = *((uint32_t *)buf);
Sissors 1:e1b0157ce547 49 }
Sissors 1:e1b0157ce547 50
Sissors 1:e1b0157ce547 51 // create messages
Sissors 1:e1b0157ce547 52
Sissors 1:e1b0157ce547 53 /** Create a NoteOff message
Sissors 1:e1b0157ce547 54 * @param key Key ID
Sissors 1:e1b0157ce547 55 * @param velocity Key velocity (0-127, default = 127)
Sissors 1:e1b0157ce547 56 * @param channel Key channel (0-15, default 0)
Sissors 1:e1b0157ce547 57 * @returns A MIDIMessage
Sissors 1:e1b0157ce547 58 */
Sissors 1:e1b0157ce547 59 static MIDIMessage NoteOff(int key, int velocity = 127, int channel = 0) {
Sissors 1:e1b0157ce547 60 MIDIMessage msg;
Sissors 1:e1b0157ce547 61 msg.data[0] = CABLE_NUM | 0x08;
Sissors 1:e1b0157ce547 62 msg.data[1] = 0x80 | (channel & 0x0F);
Sissors 1:e1b0157ce547 63 msg.data[2] = key & 0x7F;
Sissors 1:e1b0157ce547 64 msg.data[3] = velocity & 0x7F;
Sissors 1:e1b0157ce547 65 return msg;
Sissors 1:e1b0157ce547 66 }
Sissors 1:e1b0157ce547 67
Sissors 1:e1b0157ce547 68 /** Create a NoteOn message
Sissors 1:e1b0157ce547 69 * @param key Key ID
Sissors 1:e1b0157ce547 70 * @param velocity Key velocity (0-127, default = 127)
Sissors 1:e1b0157ce547 71 * @param channel Key channel (0-15, default 0)
Sissors 1:e1b0157ce547 72 * @returns A MIDIMessage
Sissors 1:e1b0157ce547 73 */
Sissors 1:e1b0157ce547 74 static MIDIMessage NoteOn(int key, int velocity = 127, int channel = 0) {
Sissors 1:e1b0157ce547 75 MIDIMessage msg;
Sissors 1:e1b0157ce547 76 msg.data[0] = CABLE_NUM | 0x09;
Sissors 1:e1b0157ce547 77 msg.data[1] = 0x90 | (channel & 0x0F);
Sissors 1:e1b0157ce547 78 msg.data[2] = key & 0x7F;
Sissors 1:e1b0157ce547 79 msg.data[3] = velocity & 0x7F;
Sissors 1:e1b0157ce547 80 return msg;
Sissors 1:e1b0157ce547 81 }
Sissors 1:e1b0157ce547 82
Sissors 1:e1b0157ce547 83 /** Create a PolyPhonic Aftertouch message
Sissors 1:e1b0157ce547 84 * @param key Key ID
Sissors 1:e1b0157ce547 85 * @param pressure Aftertouch pressure (0-127)
Sissors 1:e1b0157ce547 86 * @param channel Key channel (0-15, default 0)
Sissors 1:e1b0157ce547 87 * @returns A MIDIMessage
Sissors 1:e1b0157ce547 88 */
Sissors 1:e1b0157ce547 89 static MIDIMessage PolyphonicAftertouch(int key, int pressure, int channel = 0) {
Sissors 1:e1b0157ce547 90 MIDIMessage msg;
Sissors 1:e1b0157ce547 91 msg.data[0] = CABLE_NUM | 0x0A;
Sissors 1:e1b0157ce547 92 msg.data[1] = 0xA0 | (channel & 0x0F);
Sissors 1:e1b0157ce547 93 msg.data[2] = key & 0x7F;
Sissors 1:e1b0157ce547 94 msg.data[3] = pressure & 0x7F;
Sissors 1:e1b0157ce547 95 return msg;
Sissors 1:e1b0157ce547 96 }
Sissors 1:e1b0157ce547 97
Sissors 1:e1b0157ce547 98 /** Create a Control Change message
Sissors 1:e1b0157ce547 99 * @param control Controller ID
Sissors 1:e1b0157ce547 100 * @param value Controller value (0-127)
Sissors 1:e1b0157ce547 101 * @param channel Controller channel (0-15, default 0)
Sissors 1:e1b0157ce547 102 * @returns A MIDIMessage
Sissors 1:e1b0157ce547 103 */
Sissors 1:e1b0157ce547 104 static MIDIMessage ControlChange(int control, int value, int channel = 0) {
Sissors 1:e1b0157ce547 105 MIDIMessage msg;
Sissors 1:e1b0157ce547 106 msg.data[0] = CABLE_NUM | 0x0B;
Sissors 1:e1b0157ce547 107 msg.data[1] = 0xB0 | (channel & 0x0F);
Sissors 1:e1b0157ce547 108 msg.data[2] = control & 0x7F;
Sissors 1:e1b0157ce547 109 msg.data[3] = value & 0x7F;
Sissors 1:e1b0157ce547 110 return msg;
Sissors 1:e1b0157ce547 111 }
Sissors 1:e1b0157ce547 112
Sissors 1:e1b0157ce547 113 /** Create a Program Change message
Sissors 1:e1b0157ce547 114 * @param program Program ID
Sissors 1:e1b0157ce547 115 * @param channel Channel (0-15, default 0)
Sissors 1:e1b0157ce547 116 * @returns A MIDIMessage
Sissors 1:e1b0157ce547 117 */
Sissors 1:e1b0157ce547 118 static MIDIMessage ProgramChange(int program, int channel = 0) {
Sissors 1:e1b0157ce547 119 MIDIMessage msg;
Sissors 1:e1b0157ce547 120 msg.data[0] = CABLE_NUM | 0x0C;
Sissors 1:e1b0157ce547 121 msg.data[1] = 0xC0 | (channel & 0x0F);
Sissors 1:e1b0157ce547 122 msg.data[2] = program & 0x7F;
Sissors 1:e1b0157ce547 123 msg.data[3] = 0x00;
Sissors 1:e1b0157ce547 124 return msg;
Sissors 1:e1b0157ce547 125 }
Sissors 1:e1b0157ce547 126
Sissors 1:e1b0157ce547 127 /** Create a Channel Aftertouch message
Sissors 1:e1b0157ce547 128 * @param pressure Pressure
Sissors 1:e1b0157ce547 129 * @param channel Key channel (0-15, default 0)
Sissors 1:e1b0157ce547 130 * @returns A MIDIMessage
Sissors 1:e1b0157ce547 131 */
Sissors 1:e1b0157ce547 132 static MIDIMessage ChannelAftertouch(int pressure, int channel = 0) {
Sissors 1:e1b0157ce547 133 MIDIMessage msg;
Sissors 1:e1b0157ce547 134 msg.data[0] = CABLE_NUM | 0x0D;
Sissors 1:e1b0157ce547 135 msg.data[1] = 0xD0 | (channel & 0x0F);
Sissors 1:e1b0157ce547 136 msg.data[2] = pressure & 0x7F;
Sissors 1:e1b0157ce547 137 msg.data[3] = 0x00;
Sissors 1:e1b0157ce547 138 return msg;
Sissors 1:e1b0157ce547 139 }
Sissors 1:e1b0157ce547 140
Sissors 1:e1b0157ce547 141 /** Create a Pitch Wheel message
Sissors 1:e1b0157ce547 142 * @param pitch Pitch (-8192 - 8191, default = 0)
Sissors 1:e1b0157ce547 143 * @param channel Channel (0-15, default 0)
Sissors 1:e1b0157ce547 144 * @returns A MIDIMessage
Sissors 1:e1b0157ce547 145 */
Sissors 1:e1b0157ce547 146 static MIDIMessage PitchWheel(int pitch = 0, int channel = 0) {
Sissors 1:e1b0157ce547 147 MIDIMessage msg;
Sissors 1:e1b0157ce547 148 int p = pitch + 8192; // 0 - 16383, 8192 is center
Sissors 1:e1b0157ce547 149 msg.data[0] = CABLE_NUM | 0x0E;
Sissors 1:e1b0157ce547 150 msg.data[1] = 0xE0 | (channel & 0x0F);
Sissors 1:e1b0157ce547 151 msg.data[2] = p & 0x7F;
Sissors 1:e1b0157ce547 152 msg.data[3] = (p >> 7) & 0x7F;
Sissors 1:e1b0157ce547 153 return msg;
Sissors 1:e1b0157ce547 154 }
Sissors 1:e1b0157ce547 155
Sissors 1:e1b0157ce547 156 /** Create an All Notes Off message
Sissors 1:e1b0157ce547 157 * @param channel Channel (0-15, default 0)
Sissors 1:e1b0157ce547 158 * @returns A MIDIMessage
Sissors 1:e1b0157ce547 159 */
Sissors 1:e1b0157ce547 160 static MIDIMessage AllNotesOff(int channel = 0) {
Sissors 1:e1b0157ce547 161 return ControlChange(123, 0, channel);
Sissors 1:e1b0157ce547 162 }
Sissors 1:e1b0157ce547 163
Sissors 1:e1b0157ce547 164 // decode messages
Sissors 1:e1b0157ce547 165
Sissors 1:e1b0157ce547 166 /** MIDI Message Types */
Sissors 1:e1b0157ce547 167 enum MIDIMessageType {
Sissors 1:e1b0157ce547 168 ErrorType,
Sissors 1:e1b0157ce547 169 NoteOffType,
Sissors 1:e1b0157ce547 170 NoteOnType,
Sissors 1:e1b0157ce547 171 PolyphonicAftertouchType,
Sissors 1:e1b0157ce547 172 ControlChangeType,
Sissors 1:e1b0157ce547 173 ProgramChangeType,
Sissors 1:e1b0157ce547 174 ChannelAftertouchType,
Sissors 1:e1b0157ce547 175 PitchWheelType,
Sissors 1:e1b0157ce547 176 AllNotesOffType
Sissors 1:e1b0157ce547 177 };
Sissors 1:e1b0157ce547 178
Sissors 1:e1b0157ce547 179 /** Read the message type
Sissors 1:e1b0157ce547 180 * @returns MIDIMessageType
Sissors 1:e1b0157ce547 181 */
Sissors 1:e1b0157ce547 182 MIDIMessageType type() {
Sissors 1:e1b0157ce547 183 switch((data[1] >> 4) & 0xF) {
Sissors 1:e1b0157ce547 184 case 0x8: return NoteOffType;
Sissors 1:e1b0157ce547 185 case 0x9: return NoteOnType;
Sissors 1:e1b0157ce547 186 case 0xA: return PolyphonicAftertouchType;
Sissors 1:e1b0157ce547 187 case 0xB:
Sissors 1:e1b0157ce547 188 if(controller() < 120) { // standard controllers
Sissors 1:e1b0157ce547 189 return ControlChangeType;
Sissors 1:e1b0157ce547 190 } else if(controller() == 123) {
Sissors 1:e1b0157ce547 191 return AllNotesOffType;
Sissors 1:e1b0157ce547 192 } else {
Sissors 1:e1b0157ce547 193 return ErrorType; // unsupported atm
Sissors 1:e1b0157ce547 194 }
Sissors 1:e1b0157ce547 195 case 0xC: return ProgramChangeType;
Sissors 1:e1b0157ce547 196 case 0xD: return ChannelAftertouchType;
Sissors 1:e1b0157ce547 197 case 0xE: return PitchWheelType;
Sissors 1:e1b0157ce547 198 default: return ErrorType;
Sissors 1:e1b0157ce547 199 }
Sissors 1:e1b0157ce547 200 }
Sissors 1:e1b0157ce547 201
Sissors 1:e1b0157ce547 202 /** Read the channel number */
Sissors 1:e1b0157ce547 203 int channel() {
Sissors 1:e1b0157ce547 204 return (data[1] & 0x0F);
Sissors 1:e1b0157ce547 205 }
Sissors 1:e1b0157ce547 206
Sissors 1:e1b0157ce547 207 /** Read the key ID */
Sissors 1:e1b0157ce547 208 int key() {
Sissors 1:e1b0157ce547 209 return (data[2] & 0x7F);
Sissors 1:e1b0157ce547 210 }
Sissors 1:e1b0157ce547 211
Sissors 1:e1b0157ce547 212 /** Read the velocity */
Sissors 1:e1b0157ce547 213 int velocity() {
Sissors 1:e1b0157ce547 214 return (data[3] & 0x7F);
Sissors 1:e1b0157ce547 215 }
Sissors 1:e1b0157ce547 216
Sissors 1:e1b0157ce547 217 /** Read the controller value */
Sissors 1:e1b0157ce547 218 int value() {
Sissors 1:e1b0157ce547 219 return (data[3] & 0x7F);
Sissors 1:e1b0157ce547 220 }
Sissors 1:e1b0157ce547 221
Sissors 1:e1b0157ce547 222 /** Read the aftertouch pressure */
Sissors 1:e1b0157ce547 223 int pressure() {
Sissors 1:e1b0157ce547 224 if(type() == PolyphonicAftertouchType) {
Sissors 1:e1b0157ce547 225 return (data[3] & 0x7F);
Sissors 1:e1b0157ce547 226 } else {
Sissors 1:e1b0157ce547 227 return (data[2] & 0x7F);
Sissors 1:e1b0157ce547 228 }
Sissors 1:e1b0157ce547 229 }
Sissors 1:e1b0157ce547 230
Sissors 1:e1b0157ce547 231 /** Read the controller number */
Sissors 1:e1b0157ce547 232 int controller() {
Sissors 1:e1b0157ce547 233 return (data[2] & 0x7F);
Sissors 1:e1b0157ce547 234 }
Sissors 1:e1b0157ce547 235
Sissors 1:e1b0157ce547 236 /** Read the program number */
Sissors 1:e1b0157ce547 237 int program() {
Sissors 1:e1b0157ce547 238 return (data[2] & 0x7F);
Sissors 1:e1b0157ce547 239 }
Sissors 1:e1b0157ce547 240
Sissors 1:e1b0157ce547 241 /** Read the pitch value */
Sissors 1:e1b0157ce547 242 int pitch() {
Sissors 1:e1b0157ce547 243 int p = ((data[3] & 0x7F) << 7) | (data[2] & 0x7F);
Sissors 1:e1b0157ce547 244 return p - 8192; // 0 - 16383, 8192 is center
Sissors 1:e1b0157ce547 245 }
Sissors 1:e1b0157ce547 246
Sissors 1:e1b0157ce547 247 uint8_t data[4];
Sissors 1:e1b0157ce547 248 };
Sissors 1:e1b0157ce547 249
Sissors 1:e1b0157ce547 250 #endif