Added general purpus HID report
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Diff: USBMIDI/MIDIMessage.h
- Revision:
- 28:6cc8a2d36729
- Parent:
- 27:0c6524151939
--- a/USBMIDI/MIDIMessage.h Wed Jun 18 09:00:48 2014 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,251 +0,0 @@ -/* 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. -*/ - -#ifndef MIDIMESSAGE_H -#define MIDIMESSAGE_H - -#include "mbed.h" - -// MIDI Message Format -// -// [ msg(4) | channel(4) ] [ 0 | n(7) ] [ 0 | m(7) ] -// -// MIDI Data Messages (Channel Specific) -// -// Message msg n m -// --------------------------------------------- -// Note Off 0x8 Key Velocity -// Note On 0x9 Key Velocity -// Polyphonic Aftertouch 0xA Key Pressure -// Control Change 0xB Controller Value -// Program Change 0xC Program - -// Channel Aftertouch 0xD Pressure - -// Pitch Wheel 0xE LSB MSB - -#define CABLE_NUM (0<<4) - -/** A MIDI message container */ -class MIDIMessage { -public: - MIDIMessage() {} - - MIDIMessage(uint8_t *buf) { - for (int i = 0; i < 4; i++) - data[i] = buf[i]; - } - - // create messages - - /** Create a NoteOff message - * @param key Key ID - * @param velocity Key velocity (0-127, default = 127) - * @param channel Key channel (0-15, default 0) - * @returns A MIDIMessage - */ - static MIDIMessage NoteOff(int key, int velocity = 127, int channel = 0) { - MIDIMessage msg; - msg.data[0] = CABLE_NUM | 0x08; - msg.data[1] = 0x80 | (channel & 0x0F); - msg.data[2] = key & 0x7F; - msg.data[3] = velocity & 0x7F; - return msg; - } - - /** Create a NoteOn message - * @param key Key ID - * @param velocity Key velocity (0-127, default = 127) - * @param channel Key channel (0-15, default 0) - * @returns A MIDIMessage - */ - static MIDIMessage NoteOn(int key, int velocity = 127, int channel = 0) { - MIDIMessage msg; - msg.data[0] = CABLE_NUM | 0x09; - msg.data[1] = 0x90 | (channel & 0x0F); - msg.data[2] = key & 0x7F; - msg.data[3] = velocity & 0x7F; - return msg; - } - - /** Create a PolyPhonic Aftertouch message - * @param key Key ID - * @param pressure Aftertouch pressure (0-127) - * @param channel Key channel (0-15, default 0) - * @returns A MIDIMessage - */ - static MIDIMessage PolyphonicAftertouch(int key, int pressure, int channel = 0) { - MIDIMessage msg; - msg.data[0] = CABLE_NUM | 0x0A; - msg.data[1] = 0xA0 | (channel & 0x0F); - msg.data[2] = key & 0x7F; - msg.data[3] = pressure & 0x7F; - return msg; - } - - /** Create a Control Change message - * @param control Controller ID - * @param value Controller value (0-127) - * @param channel Controller channel (0-15, default 0) - * @returns A MIDIMessage - */ - static MIDIMessage ControlChange(int control, int value, int channel = 0) { - MIDIMessage msg; - msg.data[0] = CABLE_NUM | 0x0B; - msg.data[1] = 0xB0 | (channel & 0x0F); - msg.data[2] = control & 0x7F; - msg.data[3] = value & 0x7F; - return msg; - } - - /** Create a Program Change message - * @param program Program ID - * @param channel Channel (0-15, default 0) - * @returns A MIDIMessage - */ - static MIDIMessage ProgramChange(int program, int channel = 0) { - MIDIMessage msg; - msg.data[0] = CABLE_NUM | 0x0C; - msg.data[1] = 0xC0 | (channel & 0x0F); - msg.data[2] = program & 0x7F; - msg.data[3] = 0x00; - return msg; - } - - /** Create a Channel Aftertouch message - * @param pressure Pressure - * @param channel Key channel (0-15, default 0) - * @returns A MIDIMessage - */ - static MIDIMessage ChannelAftertouch(int pressure, int channel = 0) { - MIDIMessage msg; - msg.data[0] = CABLE_NUM | 0x0D; - msg.data[1] = 0xD0 | (channel & 0x0F); - msg.data[2] = pressure & 0x7F; - msg.data[3] = 0x00; - return msg; - } - - /** Create a Pitch Wheel message - * @param pitch Pitch (-8192 - 8191, default = 0) - * @param channel Channel (0-15, default 0) - * @returns A MIDIMessage - */ - static MIDIMessage PitchWheel(int pitch = 0, int channel = 0) { - MIDIMessage msg; - int p = pitch + 8192; // 0 - 16383, 8192 is center - msg.data[0] = CABLE_NUM | 0x0E; - msg.data[1] = 0xE0 | (channel & 0x0F); - msg.data[2] = p & 0x7F; - msg.data[3] = (p >> 7) & 0x7F; - return msg; - } - - /** Create an All Notes Off message - * @param channel Channel (0-15, default 0) - * @returns A MIDIMessage - */ - static MIDIMessage AllNotesOff(int channel = 0) { - return ControlChange(123, 0, channel); - } - - // decode messages - - /** MIDI Message Types */ - enum MIDIMessageType { - ErrorType, - NoteOffType, - NoteOnType, - PolyphonicAftertouchType, - ControlChangeType, - ProgramChangeType, - ChannelAftertouchType, - PitchWheelType, - AllNotesOffType - }; - - /** Read the message type - * @returns MIDIMessageType - */ - MIDIMessageType type() { - switch((data[1] >> 4) & 0xF) { - case 0x8: return NoteOffType; - case 0x9: return NoteOnType; - case 0xA: return PolyphonicAftertouchType; - case 0xB: - if(controller() < 120) { // standard controllers - return ControlChangeType; - } else if(controller() == 123) { - return AllNotesOffType; - } else { - return ErrorType; // unsupported atm - } - case 0xC: return ProgramChangeType; - case 0xD: return ChannelAftertouchType; - case 0xE: return PitchWheelType; - default: return ErrorType; - } - } - - /** Read the channel number */ - int channel() { - return (data[1] & 0x0F); - } - - /** Read the key ID */ - int key() { - return (data[2] & 0x7F); - } - - /** Read the velocity */ - int velocity() { - return (data[3] & 0x7F); - } - - /** Read the controller value */ - int value() { - return (data[3] & 0x7F); - } - - /** Read the aftertouch pressure */ - int pressure() { - if(type() == PolyphonicAftertouchType) { - return (data[3] & 0x7F); - } else { - return (data[2] & 0x7F); - } - } - - /** Read the controller number */ - int controller() { - return (data[2] & 0x7F); - } - - /** Read the program number */ - int program() { - return (data[2] & 0x7F); - } - - /** Read the pitch value */ - int pitch() { - int p = ((data[3] & 0x7F) << 7) | (data[2] & 0x7F); - return p - 8192; // 0 - 16383, 8192 is center - } - - uint8_t data[4]; -}; - -#endif