Mihail Stoyanov / USBDevice

Fork of the official USBDevice library

Fork of USBDevice by mbed official

USBMIDI/USBMIDI.cpp@73:8d28a0cb7b43, 2017-04-28 (annotated)

Committer:
screamer
Date:
Fri Apr 28 11:26:51 2017 +0100
Branch:
github-merge
Revision:
73:8d28a0cb7b43
Parent:
50:a3c50882f2c5 
Merge from mbed-os @ github

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 73:8d28a0cb7b43 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
screamer 73:8d28a0cb7b43 2 *
screamer 73:8d28a0cb7b43 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
screamer 73:8d28a0cb7b43 4 * and associated documentation files (the "Software"), to deal in the Software without
screamer 73:8d28a0cb7b43 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
screamer 73:8d28a0cb7b43 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
screamer 73:8d28a0cb7b43 7 * Software is furnished to do so, subject to the following conditions:
screamer 73:8d28a0cb7b43 8 *
screamer 73:8d28a0cb7b43 9 * The above copyright notice and this permission notice shall be included in all copies or
screamer 73:8d28a0cb7b43 10 * substantial portions of the Software.
screamer 73:8d28a0cb7b43 11 *
screamer 73:8d28a0cb7b43 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
screamer 73:8d28a0cb7b43 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
screamer 73:8d28a0cb7b43 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
screamer 73:8d28a0cb7b43 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
screamer 73:8d28a0cb7b43 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
screamer 73:8d28a0cb7b43 17 */
screamer 73:8d28a0cb7b43 18
screamer 73:8d28a0cb7b43 19 #include "stdint.h"
screamer 73:8d28a0cb7b43 20 #include "USBMIDI.h"
screamer 73:8d28a0cb7b43 21
screamer 73:8d28a0cb7b43 22
screamer 73:8d28a0cb7b43 23 USBMIDI::USBMIDI(uint16_t vendor_id, uint16_t product_id, uint16_t product_release)
screamer 73:8d28a0cb7b43 24 : USBDevice(vendor_id, product_id, product_release), cur_data(0), data_end(true)
screamer 73:8d28a0cb7b43 25 {
screamer 73:8d28a0cb7b43 26 midi_evt = NULL;
screamer 73:8d28a0cb7b43 27 USBDevice::connect();
screamer 73:8d28a0cb7b43 28 }
screamer 73:8d28a0cb7b43 29
screamer 73:8d28a0cb7b43 30 // write plain MIDIMessage that will be converted to USBMidi event packet
screamer 73:8d28a0cb7b43 31 void USBMIDI::write(MIDIMessage m) {
screamer 73:8d28a0cb7b43 32 // first byte keeped for retro-compatibility
screamer 73:8d28a0cb7b43 33 for(int p=1; p < m.length; p+=3) {
screamer 73:8d28a0cb7b43 34 uint8_t buf[4];
screamer 73:8d28a0cb7b43 35 // Midi message to USBMidi event packet
screamer 73:8d28a0cb7b43 36 buf[0]=m.data[1] >> 4;
screamer 73:8d28a0cb7b43 37 // SysEx
screamer 73:8d28a0cb7b43 38 if(buf[0] == 0xF) {
screamer 73:8d28a0cb7b43 39 if((m.length - p) > 3) {
screamer 73:8d28a0cb7b43 40 // SysEx start or continue
screamer 73:8d28a0cb7b43 41 buf[0]=0x4;
screamer 73:8d28a0cb7b43 42 } else {
screamer 73:8d28a0cb7b43 43 switch(m.length - p) {
screamer 73:8d28a0cb7b43 44 case 1:
screamer 73:8d28a0cb7b43 45 // SysEx end with one byte
screamer 73:8d28a0cb7b43 46 buf[0]=0x5;
screamer 73:8d28a0cb7b43 47 break;
screamer 73:8d28a0cb7b43 48 case 2:
screamer 73:8d28a0cb7b43 49 // SysEx end with two bytes
screamer 73:8d28a0cb7b43 50 buf[0]=0x6;
screamer 73:8d28a0cb7b43 51 break;
screamer 73:8d28a0cb7b43 52 case 3:
screamer 73:8d28a0cb7b43 53 // SysEx end with three bytes
screamer 73:8d28a0cb7b43 54 buf[0]=0x7;
screamer 73:8d28a0cb7b43 55 break;
screamer 73:8d28a0cb7b43 56 }
screamer 73:8d28a0cb7b43 57 }
screamer 73:8d28a0cb7b43 58 }
screamer 73:8d28a0cb7b43 59 buf[1]=m.data[p];
screamer 73:8d28a0cb7b43 60
screamer 73:8d28a0cb7b43 61 if(p+1 < m.length)
screamer 73:8d28a0cb7b43 62 buf[2]=m.data[p+1];
screamer 73:8d28a0cb7b43 63 else
screamer 73:8d28a0cb7b43 64 buf[2]=0;
screamer 73:8d28a0cb7b43 65
screamer 73:8d28a0cb7b43 66 if(p+2 < m.length)
screamer 73:8d28a0cb7b43 67 buf[3]=m.data[p+2];
screamer 73:8d28a0cb7b43 68 else
screamer 73:8d28a0cb7b43 69 buf[3]=0;
screamer 73:8d28a0cb7b43 70
screamer 73:8d28a0cb7b43 71 USBDevice::write(EPBULK_IN, buf, 4, MAX_PACKET_SIZE_EPBULK);
screamer 73:8d28a0cb7b43 72 }
screamer 73:8d28a0cb7b43 73 }
screamer 73:8d28a0cb7b43 74
screamer 73:8d28a0cb7b43 75
screamer 73:8d28a0cb7b43 76 void USBMIDI::attach(void (*fptr)(MIDIMessage)) {
screamer 73:8d28a0cb7b43 77 midi_evt = fptr;
screamer 73:8d28a0cb7b43 78 }
screamer 73:8d28a0cb7b43 79
screamer 73:8d28a0cb7b43 80 bool USBMIDI::EPBULK_OUT_callback() {
screamer 73:8d28a0cb7b43 81 uint8_t buf[64];
screamer 73:8d28a0cb7b43 82 uint32_t len;
screamer 73:8d28a0cb7b43 83 readEP(EPBULK_OUT, buf, &len, 64);
screamer 73:8d28a0cb7b43 84
screamer 73:8d28a0cb7b43 85 if (midi_evt != NULL) {
screamer 73:8d28a0cb7b43 86 for (uint32_t i=0; i<len; i+=4) {
screamer 73:8d28a0cb7b43 87 uint8_t data_read;
screamer 73:8d28a0cb7b43 88 data_end=true;
screamer 73:8d28a0cb7b43 89 switch(buf[i]) {
screamer 73:8d28a0cb7b43 90 case 0x2:
screamer 73:8d28a0cb7b43 91 // Two-bytes System Common Message - undefined in USBMidi 1.0
screamer 73:8d28a0cb7b43 92 data_read=2;
screamer 73:8d28a0cb7b43 93 break;
screamer 73:8d28a0cb7b43 94 case 0x4:
screamer 73:8d28a0cb7b43 95 // SysEx start or continue
screamer 73:8d28a0cb7b43 96 data_end=false;
screamer 73:8d28a0cb7b43 97 data_read=3;
screamer 73:8d28a0cb7b43 98 break;
screamer 73:8d28a0cb7b43 99 case 0x5:
screamer 73:8d28a0cb7b43 100 // Single-byte System Common Message or SysEx end with one byte
screamer 73:8d28a0cb7b43 101 data_read=1;
screamer 73:8d28a0cb7b43 102 break;
screamer 73:8d28a0cb7b43 103 case 0x6:
screamer 73:8d28a0cb7b43 104 // SysEx end with two bytes
screamer 73:8d28a0cb7b43 105 data_read=2;
screamer 73:8d28a0cb7b43 106 break;
screamer 73:8d28a0cb7b43 107 case 0xC:
screamer 73:8d28a0cb7b43 108 // Program change
screamer 73:8d28a0cb7b43 109 data_read=2;
screamer 73:8d28a0cb7b43 110 break;
screamer 73:8d28a0cb7b43 111 case 0xD:
screamer 73:8d28a0cb7b43 112 // Channel pressure
screamer 73:8d28a0cb7b43 113 data_read=2;
screamer 73:8d28a0cb7b43 114 break;
screamer 73:8d28a0cb7b43 115 case 0xF:
screamer 73:8d28a0cb7b43 116 // Single byte
screamer 73:8d28a0cb7b43 117 data_read=1;
screamer 73:8d28a0cb7b43 118 break;
screamer 73:8d28a0cb7b43 119 default:
screamer 73:8d28a0cb7b43 120 // Others three-bytes messages
screamer 73:8d28a0cb7b43 121 data_read=3;
screamer 73:8d28a0cb7b43 122 break;
screamer 73:8d28a0cb7b43 123 }
screamer 73:8d28a0cb7b43 124
screamer 73:8d28a0cb7b43 125 for(uint8_t j=1;j<data_read+1;j++) {
screamer 73:8d28a0cb7b43 126 data[cur_data]=buf[i+j];
screamer 73:8d28a0cb7b43 127 cur_data++;
screamer 73:8d28a0cb7b43 128 }
screamer 73:8d28a0cb7b43 129
screamer 73:8d28a0cb7b43 130 if(data_end) {
screamer 73:8d28a0cb7b43 131 midi_evt(MIDIMessage(data,cur_data));
screamer 73:8d28a0cb7b43 132 cur_data=0;
screamer 73:8d28a0cb7b43 133 }
screamer 73:8d28a0cb7b43 134 }
screamer 73:8d28a0cb7b43 135 }
screamer 73:8d28a0cb7b43 136
screamer 73:8d28a0cb7b43 137 // We reactivate the endpoint to receive next characters
screamer 73:8d28a0cb7b43 138 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
screamer 73:8d28a0cb7b43 139 return true;
screamer 73:8d28a0cb7b43 140 }
screamer 73:8d28a0cb7b43 141
screamer 73:8d28a0cb7b43 142 // Called in ISR context
screamer 73:8d28a0cb7b43 143 // Set configuration. Return false if the
screamer 73:8d28a0cb7b43 144 // configuration is not supported.
screamer 73:8d28a0cb7b43 145 bool USBMIDI::USBCallback_setConfiguration(uint8_t configuration) {
screamer 73:8d28a0cb7b43 146 if (configuration != DEFAULT_CONFIGURATION) {
screamer 73:8d28a0cb7b43 147 return false;
screamer 73:8d28a0cb7b43 148 }
screamer 73:8d28a0cb7b43 149
screamer 73:8d28a0cb7b43 150 // Configure endpoints > 0
screamer 73:8d28a0cb7b43 151 addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
screamer 73:8d28a0cb7b43 152 addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
screamer 73:8d28a0cb7b43 153
screamer 73:8d28a0cb7b43 154 // We activate the endpoint to be able to receive data
screamer 73:8d28a0cb7b43 155 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
screamer 73:8d28a0cb7b43 156 return true;
screamer 73:8d28a0cb7b43 157 }
screamer 73:8d28a0cb7b43 158
screamer 73:8d28a0cb7b43 159
screamer 73:8d28a0cb7b43 160 uint8_t * USBMIDI::stringIinterfaceDesc() {
screamer 73:8d28a0cb7b43 161 static uint8_t stringIinterfaceDescriptor[] = {
screamer 73:8d28a0cb7b43 162 0x0c, //bLength
screamer 73:8d28a0cb7b43 163 STRING_DESCRIPTOR, //bDescriptorType 0x03
screamer 73:8d28a0cb7b43 164 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio
screamer 73:8d28a0cb7b43 165 };
screamer 73:8d28a0cb7b43 166 return stringIinterfaceDescriptor;
screamer 73:8d28a0cb7b43 167 }
screamer 73:8d28a0cb7b43 168
screamer 73:8d28a0cb7b43 169 uint8_t * USBMIDI::stringIproductDesc() {
screamer 73:8d28a0cb7b43 170 static uint8_t stringIproductDescriptor[] = {
screamer 73:8d28a0cb7b43 171 0x16, //bLength
screamer 73:8d28a0cb7b43 172 STRING_DESCRIPTOR, //bDescriptorType 0x03
screamer 73:8d28a0cb7b43 173 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio
screamer 73:8d28a0cb7b43 174 };
screamer 73:8d28a0cb7b43 175 return stringIproductDescriptor;
screamer 73:8d28a0cb7b43 176 }
screamer 73:8d28a0cb7b43 177
screamer 73:8d28a0cb7b43 178
screamer 73:8d28a0cb7b43 179 uint8_t * USBMIDI::configurationDesc() {
screamer 73:8d28a0cb7b43 180 static uint8_t configDescriptor[] = {
screamer 73:8d28a0cb7b43 181 // configuration descriptor
screamer 73:8d28a0cb7b43 182 0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50,
screamer 73:8d28a0cb7b43 183
screamer 73:8d28a0cb7b43 184 // The Audio Interface Collection
screamer 73:8d28a0cb7b43 185 0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor
screamer 73:8d28a0cb7b43 186 0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor
screamer 73:8d28a0cb7b43 187 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors
screamer 73:8d28a0cb7b43 188 0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00, // Class-Specific MS Interface Header Descriptor
screamer 73:8d28a0cb7b43 189
screamer 73:8d28a0cb7b43 190 // MIDI IN JACKS
screamer 73:8d28a0cb7b43 191 0x06, 0x24, 0x02, 0x01, 0x01, 0x00,
screamer 73:8d28a0cb7b43 192 0x06, 0x24, 0x02, 0x02, 0x02, 0x00,
screamer 73:8d28a0cb7b43 193
screamer 73:8d28a0cb7b43 194 // MIDI OUT JACKS
screamer 73:8d28a0cb7b43 195 0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00,
screamer 73:8d28a0cb7b43 196 0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00,
screamer 73:8d28a0cb7b43 197
screamer 73:8d28a0cb7b43 198 // OUT endpoint descriptor
screamer 73:8d28a0cb7b43 199 0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
screamer 73:8d28a0cb7b43 200 0x05, 0x25, 0x01, 0x01, 0x01,
screamer 73:8d28a0cb7b43 201
screamer 73:8d28a0cb7b43 202 // IN endpoint descriptor
screamer 73:8d28a0cb7b43 203 0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
screamer 73:8d28a0cb7b43 204 0x05, 0x25, 0x01, 0x01, 0x03,
screamer 73:8d28a0cb7b43 205 };
screamer 73:8d28a0cb7b43 206 return configDescriptor;
screamer 73:8d28a0cb7b43 207 }