f092c21bf6
Differential Revision: https://reviews.freebsd.org/D36195 MFC after: 1 week Sponsored by: NVIDIA Networking
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2022 Goran Mekić
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <fcntl.h>
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#define CMD_MASK 0xF0
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#define NOTE_ON 0x90
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#define NOTE_OFF 0x80
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#define CHANNEL_MASK 0xF
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#define CONTROLER_ON 0xB0
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typedef struct midi_event {
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unsigned char type;
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unsigned char channel;
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union {
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unsigned char note;
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unsigned controller;
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};
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union {
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unsigned char velocity;
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unsigned char value;
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};
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} midi_event_t;
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typedef struct midi_config {
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char *device;
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int fd;
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} midi_config_t;
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void
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oss_midi_init(midi_config_t *config)
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{
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if ((config->fd = open(config->device, O_RDWR)) == -1) {
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perror("Error opening MIDI device");
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exit(1);
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}
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}
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