diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBMIDI/USBMIDI.cpp')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBMIDI/USBMIDI.cpp | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBMIDI/USBMIDI.cpp b/tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBMIDI/USBMIDI.cpp new file mode 100644 index 0000000000..084574a790 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/USBDevice/USBMIDI/USBMIDI.cpp @@ -0,0 +1,207 @@ +/* Copyright (c) 2010-2011 mbed.org, MIT License +* +* Permission is hereby granted, free of charge, to any person obtaining a copy of this software +* and associated documentation files (the "Software"), to deal in the Software without +* restriction, including without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in all copies or +* substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING +* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include "stdint.h" +#include "USBMIDI.h" + + +USBMIDI::USBMIDI(uint16_t vendor_id, uint16_t product_id, uint16_t product_release) + : USBDevice(vendor_id, product_id, product_release), cur_data(0), data_end(true) +{ + midi_evt = NULL; + USBDevice::connect(); +} + +// write plain MIDIMessage that will be converted to USBMidi event packet +void USBMIDI::write(MIDIMessage m) { + // first byte keeped for retro-compatibility + for(int p=1; p < m.length; p+=3) { + uint8_t buf[4]; + // Midi message to USBMidi event packet + buf[0]=m.data[1] >> 4; + // SysEx + if(buf[0] == 0xF) { + if((m.length - p) > 3) { + // SysEx start or continue + buf[0]=0x4; + } else { + switch(m.length - p) { + case 1: + // SysEx end with one byte + buf[0]=0x5; + break; + case 2: + // SysEx end with two bytes + buf[0]=0x6; + break; + case 3: + // SysEx end with three bytes + buf[0]=0x7; + break; + } + } + } + buf[1]=m.data[p]; + + if(p+1 < m.length) + buf[2]=m.data[p+1]; + else + buf[2]=0; + + if(p+2 < m.length) + buf[3]=m.data[p+2]; + else + buf[3]=0; + + USBDevice::write(EPBULK_IN, buf, 4, MAX_PACKET_SIZE_EPBULK); + } +} + + +void USBMIDI::attach(void (*fptr)(MIDIMessage)) { + midi_evt = fptr; +} + +bool USBMIDI::EPBULK_OUT_callback() { + uint8_t buf[64]; + uint32_t len; + readEP(EPBULK_OUT, buf, &len, 64); + + if (midi_evt != NULL) { + for (uint32_t i=0; i<len; i+=4) { + uint8_t data_read; + data_end=true; + switch(buf[i]) { + case 0x2: + // Two-bytes System Common Message - undefined in USBMidi 1.0 + data_read=2; + break; + case 0x4: + // SysEx start or continue + data_end=false; + data_read=3; + break; + case 0x5: + // Single-byte System Common Message or SysEx end with one byte + data_read=1; + break; + case 0x6: + // SysEx end with two bytes + data_read=2; + break; + case 0xC: + // Program change + data_read=2; + break; + case 0xD: + // Channel pressure + data_read=2; + break; + case 0xF: + // Single byte + data_read=1; + break; + default: + // Others three-bytes messages + data_read=3; + break; + } + + for(uint8_t j=1;j<data_read+1;j++) { + data[cur_data]=buf[i+j]; + cur_data++; + } + + if(data_end) { + midi_evt(MIDIMessage(data,cur_data)); + cur_data=0; + } + } + } + + // We reactivate the endpoint to receive next characters + readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); + return true; +} + +// Called in ISR context +// Set configuration. Return false if the +// configuration is not supported. +bool USBMIDI::USBCallback_setConfiguration(uint8_t configuration) { + if (configuration != DEFAULT_CONFIGURATION) { + return false; + } + + // Configure endpoints > 0 + addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK); + addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); + + // We activate the endpoint to be able to receive data + readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK); + return true; +} + + +uint8_t * USBMIDI::stringIinterfaceDesc() { + static uint8_t stringIinterfaceDescriptor[] = { + 0x0c, //bLength + STRING_DESCRIPTOR, //bDescriptorType 0x03 + 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio + }; + return stringIinterfaceDescriptor; +} + +uint8_t * USBMIDI::stringIproductDesc() { + static uint8_t stringIproductDescriptor[] = { + 0x16, //bLength + STRING_DESCRIPTOR, //bDescriptorType 0x03 + 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio + }; + return stringIproductDescriptor; +} + + +uint8_t * USBMIDI::configurationDesc() { + static uint8_t configDescriptor[] = { + // configuration descriptor + 0x09, 0x02, 0x65, 0x00, 0x02, 0x01, 0x00, 0xc0, 0x50, + + // The Audio Interface Collection + 0x09, 0x04, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, // Standard AC Interface Descriptor + 0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x01, // Class-specific AC Interface Descriptor + 0x09, 0x04, 0x01, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00, // MIDIStreaming Interface Descriptors + 0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00, // Class-Specific MS Interface Header Descriptor + + // MIDI IN JACKS + 0x06, 0x24, 0x02, 0x01, 0x01, 0x00, + 0x06, 0x24, 0x02, 0x02, 0x02, 0x00, + + // MIDI OUT JACKS + 0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00, + 0x09, 0x24, 0x03, 0x02, 0x06, 0x01, 0x01, 0x01, 0x00, + + // OUT endpoint descriptor + 0x09, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, + 0x05, 0x25, 0x01, 0x01, 0x01, + + // IN endpoint descriptor + 0x09, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00, + 0x05, 0x25, 0x01, 0x01, 0x03, + }; + return configDescriptor; +} |