1 /* 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2022 Goran Mekić 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <unistd.h> 29 30 #include "ossmidi.h" 31 32 int 33 main() 34 { 35 midi_event_t event; 36 midi_config_t midi_config; 37 int l = -1; 38 unsigned char raw; 39 40 midi_config.device = "/dev/umidi1.0"; 41 oss_midi_init(&midi_config); 42 43 while ((l = read(midi_config.fd, &raw, sizeof(raw))) != -1) { 44 if (!(raw & 0x80)) { 45 continue; 46 } 47 event.type = raw & CMD_MASK; 48 event.channel = raw & CHANNEL_MASK; 49 switch (event.type) { 50 case NOTE_ON: 51 case NOTE_OFF: 52 case CONTROLER_ON: 53 if ((l = read(midi_config.fd, &(event.note), sizeof(event.note))) == -1) { 54 perror("Error reading MIDI note"); 55 exit(1); 56 } 57 if ((l = read(midi_config.fd, &(event.velocity), sizeof(event.velocity))) == -1) { 58 perror("Error reading MIDI velocity"); 59 exit(1); 60 } 61 break; 62 } 63 switch (event.type) { 64 case NOTE_ON: 65 case NOTE_OFF: 66 printf("Channel %d, note %d, velocity %d\n", event.channel, event.note, event.velocity); 67 break; 68 case CONTROLER_ON: 69 printf("Channel %d, controller %d, value %d\n", event.channel, event.controller, event.value); 70 break; 71 default: 72 printf("Unknown event type %d\n", event.type); 73 } 74 } 75 return 0; 76 } 77