mirror of https://github.com/ericonr/sndio.git
114 lines
2.4 KiB
C
114 lines
2.4 KiB
C
/*
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* Copyright (c) 2015 Alexandre Ratchov <alex@caoua.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <fcntl.h>
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#include <sndio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "bsd-compat.h"
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char usagestr[] = "usage: midicat [-d] [-i port] [-o port]\n";
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int
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main(int argc, char **argv)
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{
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#define MIDI_BUFSZ 1024
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unsigned char buf[MIDI_BUFSZ];
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struct mio_hdl *ih, *oh;
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char *in, *out;
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int dump, c, i, len, sep;
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dump = 0;
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in = NULL;
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out = NULL;
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ih = NULL;
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oh = NULL;
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while ((c = getopt(argc, argv, "di:o:")) != -1) {
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switch (c) {
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case 'd':
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dump = 1;
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break;
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case 'i':
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in = optarg;
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break;
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case 'o':
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out = optarg;
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break;
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default:
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goto bad_usage;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 0) {
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bad_usage:
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fputs(usagestr, stderr);
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return 1;
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}
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if (in == NULL && out == NULL) {
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fputs("either -i or -o required\n", stderr);
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exit(1);
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}
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if (in) {
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ih = mio_open(in, MIO_IN, 0);
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if (ih == NULL) {
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fprintf(stderr, "%s: couldn't open MIDI in\n", in);
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exit(1);
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}
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}
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if (out) {
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oh = mio_open(out, MIO_OUT, 0);
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if (oh == NULL) {
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fprintf(stderr, "%s: couldn't open MIDI out\n", out);
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exit(1);
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}
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}
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for (;;) {
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if (in) {
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len = mio_read(ih, buf, sizeof(buf));
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if (len == 0) {
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fprintf(stderr, "%s: disconnected\n", in);
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break;
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}
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} else {
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len = read(STDIN_FILENO, buf, sizeof(buf));
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if (len == 0)
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break;
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if (len < 0) {
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perror("stdin");
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exit(1);
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}
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}
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if (out)
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mio_write(oh, buf, len);
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else
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write(STDOUT_FILENO, buf, len);
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if (dump) {
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for (i = 0; i < len; i++) {
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sep = (i % 16 == 15 || i == len - 1) ?
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'\n' : ' ';
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fprintf(stderr, "%02x%c", buf[i], sep);
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}
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}
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}
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if (in)
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mio_close(ih);
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if (out)
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mio_close(oh);
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return 0;
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}
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