diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostMIDI/USBHostMIDI.cpp')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostMIDI/USBHostMIDI.cpp | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostMIDI/USBHostMIDI.cpp b/tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostMIDI/USBHostMIDI.cpp new file mode 100644 index 0000000000..3e98f88b5b --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/USBHost/USBHostMIDI/USBHostMIDI.cpp @@ -0,0 +1,362 @@ +/* Copyright (c) 2014 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 "USBHostMIDI.h" + +#if USBHOST_MIDI + +#include "dbg.h" + +#define SET_LINE_CODING 0x20 + +USBHostMIDI::USBHostMIDI() { + host = USBHost::getHostInst(); + size_bulk_in = 0; + size_bulk_out = 0; + init(); +} + +void USBHostMIDI::init() { + dev = NULL; + bulk_in = NULL; + bulk_out = NULL; + dev_connected = false; + midi_intf = -1; + midi_device_found = false; + sysExBufferPos = 0; +} + +bool USBHostMIDI::connected() { + return dev_connected; +} + +bool USBHostMIDI::connect() { + if (dev_connected) { + return true; + } + + for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) { + if ((dev = host->getDevice(i)) != NULL) { + + USB_DBG("Trying to connect MIDI device\r\n"); + + if (host->enumerate(dev, this)) { + break; + } + + if (midi_device_found) { + bulk_in = dev->getEndpoint(midi_intf, BULK_ENDPOINT, IN); + bulk_out = dev->getEndpoint(midi_intf, BULK_ENDPOINT, OUT); + + if (!bulk_in || !bulk_out) { + break; + } + + USB_INFO("New MIDI device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, midi_intf); + dev->setName("MIDI", midi_intf); + host->registerDriver(dev, midi_intf, this, &USBHostMIDI::init); + + size_bulk_in = bulk_in->getSize(); + size_bulk_out = bulk_out->getSize(); + + bulk_in->attach(this, &USBHostMIDI::rxHandler); + + host->bulkRead(dev, bulk_in, buf, size_bulk_in, false); + dev_connected = true; + return true; + } + } + } + + init(); + return false; +} + +void USBHostMIDI::rxHandler() { + uint8_t *midi; + if (bulk_in) { + int length = bulk_in->getLengthTransferred(); + if (bulk_in->getState() == USB_TYPE_IDLE || bulk_in->getState() == USB_TYPE_FREE) { + // MIDI event handling + for (int i = 0; i < length; i += 4) { + if (i + 4 > length) { + // length shortage, ignored. + break; + } + + // read each four bytes + midi = &buf[i]; + // process MIDI message + // switch by code index number + switch (midi[0] & 0xf) { + case 0: // miscellaneous function codes + miscellaneousFunctionCode(midi[1], midi[2], midi[3]); + break; + case 1: // cable events + cableEvent(midi[1], midi[2], midi[3]); + break; + case 2: // two bytes system common messages + systemCommonTwoBytes(midi[1], midi[2]); + break; + case 3: // three bytes system common messages + systemCommonThreeBytes(midi[1], midi[2], midi[3]); + break; + case 4: // SysEx starts or continues + sysExBuffer[sysExBufferPos++] = midi[1]; + if (sysExBufferPos >= 64) { + systemExclusive(sysExBuffer, sysExBufferPos, true); + sysExBufferPos = 0; + } + sysExBuffer[sysExBufferPos++] = midi[2]; + if (sysExBufferPos >= 64) { + systemExclusive(sysExBuffer, sysExBufferPos, true); + sysExBufferPos = 0; + } + sysExBuffer[sysExBufferPos++] = midi[3]; + // SysEx continues. don't send + break; + case 5: // SysEx ends with single byte + sysExBuffer[sysExBufferPos++] = midi[1]; + systemExclusive(sysExBuffer, sysExBufferPos, false); + sysExBufferPos = 0; + break; + case 6: // SysEx ends with two bytes + sysExBuffer[sysExBufferPos++] = midi[1]; + if (sysExBufferPos >= 64) { + systemExclusive(sysExBuffer, sysExBufferPos, true); + sysExBufferPos = 0; + } + sysExBuffer[sysExBufferPos++] = midi[2]; + systemExclusive(sysExBuffer, sysExBufferPos, false); + sysExBufferPos = 0; + break; + case 7: // SysEx ends with three bytes + sysExBuffer[sysExBufferPos++] = midi[1]; + if (sysExBufferPos >= 64) { + systemExclusive(sysExBuffer, sysExBufferPos, true); + sysExBufferPos = 0; + } + sysExBuffer[sysExBufferPos++] = midi[2]; + if (sysExBufferPos >= 64) { + systemExclusive(sysExBuffer, sysExBufferPos, true); + sysExBufferPos = 0; + } + sysExBuffer[sysExBufferPos++] = midi[3]; + systemExclusive(sysExBuffer, sysExBufferPos, false); + sysExBufferPos = 0; + break; + case 8: + noteOff(midi[1] & 0xf, midi[2], midi[3]); + break; + case 9: + if (midi[3]) { + noteOn(midi[1] & 0xf, midi[2], midi[3]); + } else { + noteOff(midi[1] & 0xf, midi[2], midi[3]); + } + break; + case 10: + polyKeyPress(midi[1] & 0xf, midi[2], midi[3]); + break; + case 11: + controlChange(midi[1] & 0xf, midi[2], midi[3]); + break; + case 12: + programChange(midi[1] & 0xf, midi[2]); + break; + case 13: + channelPressure(midi[1] & 0xf, midi[2]); + break; + case 14: + pitchBend(midi[1] & 0xf, midi[2] | (midi[3] << 7)); + break; + case 15: + singleByte(midi[1]); + break; + } + } + + // read another message + host->bulkRead(dev, bulk_in, buf, size_bulk_in, false); + } + } +} + +bool USBHostMIDI::sendMidiBuffer(uint8_t data0, uint8_t data1, uint8_t data2, uint8_t data3) { + if (bulk_out) { + uint8_t midi[4]; + + midi[0] = data0; + midi[1] = data1; + midi[2] = data2; + midi[3] = data3; + if (host->bulkWrite(dev, bulk_out, (uint8_t *)midi, 4) == USB_TYPE_OK) { + return true; + } + } + return false; +} + +bool USBHostMIDI::sendMiscellaneousFunctionCode(uint8_t data1, uint8_t data2, uint8_t data3) { + return sendMidiBuffer(0, data1, data2, data3); +} + +bool USBHostMIDI::sendCableEvent(uint8_t data1, uint8_t data2, uint8_t data3) { + return sendMidiBuffer(1, data1, data2, data3); +} + +bool USBHostMIDI::sendSystemCommmonTwoBytes(uint8_t data1, uint8_t data2) { + return sendMidiBuffer(2, data1, data2, 0); +} + +bool USBHostMIDI::sendSystemCommmonThreeBytes(uint8_t data1, uint8_t data2, uint8_t data3) { + return sendMidiBuffer(3, data1, data2, 0); +} + +bool USBHostMIDI::sendSystemExclusive(uint8_t *buffer, int length) { + uint8_t midi[64]; + int midiLength; + int midiPos; + if (bulk_out) { + for (int i = 0; i < length; i += 48) { + if (i + 48 >= length) { + // contains last data + midiLength = (((length - i) + 2) / 3) * 4; + for (int pos = i; pos < length; pos += 3) { + midiPos = (pos + 2) / 3 * 4; + if (pos + 3 >= length) { + // last data + switch (pos % 3) { + case 0: + midi[midiPos ] = 7; + midi[midiPos + 1] = buffer[pos ]; + midi[midiPos + 2] = buffer[pos + 1]; + midi[midiPos + 3] = buffer[pos + 2]; + break; + case 1: + midi[midiPos ] = 5; + midi[midiPos + 1] = buffer[pos ]; + midi[midiPos + 2] = 0; + midi[midiPos + 3] = 0; + break; + case 2: + midi[midiPos ] = 6; + midi[midiPos + 1] = buffer[pos ]; + midi[midiPos + 2] = buffer[pos + 1]; + midi[midiPos + 3] = 0; + break; + } + } else { + // has more data + midi[midiPos ] = 4; + midi[midiPos + 1] = buffer[pos ]; + midi[midiPos + 2] = buffer[pos + 1]; + midi[midiPos + 3] = buffer[pos + 2]; + } + } + } else { + // has more data + midiLength = 64; + for (int pos = i; pos < length; pos += 3) { + midiPos = (pos + 2) / 3 * 4; + midi[midiPos ] = 4; + midi[midiPos + 1] = buffer[pos ]; + midi[midiPos + 2] = buffer[pos + 1]; + midi[midiPos + 3] = buffer[pos + 2]; + } + } + + if (host->bulkWrite(dev, bulk_out, (uint8_t *)midi, midiLength) != USB_TYPE_OK) { + return false; + } + } + return true; + } + return false; +} + +bool USBHostMIDI::sendNoteOff(uint8_t channel, uint8_t note, uint8_t velocity) { + return sendMidiBuffer(8, channel & 0xf | 0x80, note & 0x7f, velocity & 0x7f); +} + +bool USBHostMIDI::sendNoteOn(uint8_t channel, uint8_t note, uint8_t velocity) { + return sendMidiBuffer(9, channel & 0xf | 0x90, note & 0x7f, velocity & 0x7f); +} + +bool USBHostMIDI::sendPolyKeyPress(uint8_t channel, uint8_t note, uint8_t pressure) { + return sendMidiBuffer(10, channel & 0xf | 0xa0, note & 0x7f, pressure & 0x7f); +} + +bool USBHostMIDI::sendControlChange(uint8_t channel, uint8_t key, uint8_t value) { + return sendMidiBuffer(11, channel & 0xf | 0xb0, key & 0x7f, value & 0x7f); +} + +bool USBHostMIDI::sendProgramChange(uint8_t channel, uint8_t program) { + return sendMidiBuffer(12, channel & 0xf | 0xc0, program & 0x7f, 0); +} + +bool USBHostMIDI::sendChannelPressure(uint8_t channel, uint8_t pressure) { + return sendMidiBuffer(13, channel & 0xf | 0xd0, pressure & 0x7f, 0); +} + +bool USBHostMIDI::sendPitchBend(uint8_t channel, uint16_t value) { + return sendMidiBuffer(14, channel & 0xf | 0xe0, value & 0x7f, (value >> 7) & 0x7f); +} + +bool USBHostMIDI::sendSingleByte(uint8_t data) { + return sendMidiBuffer(15, data, 0, 0); +} + +/*virtual*/ void USBHostMIDI::setVidPid(uint16_t vid, uint16_t pid) +{ + // we don't check VID/PID for this driver +} + +/*virtual*/ bool USBHostMIDI::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed +{ + // USB MIDI class/subclass + if ((midi_intf == -1) && + (intf_class == AUDIO_CLASS) && + (intf_subclass == 0x03)) { + midi_intf = intf_nb; + return true; + } + + // vendor specific device + if ((midi_intf == -1) && + (intf_class == 0xff) && + (intf_subclass == 0x03)) { + midi_intf = intf_nb; + return true; + } + + return false; +} + +/*virtual*/ bool USBHostMIDI::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used +{ + if (intf_nb == midi_intf) { + if (type == BULK_ENDPOINT) { + midi_device_found = true; + return true; + } + } + return false; +} + +#endif |