mirror of https://github.com/ericonr/sndio.git
Use -io options to specify files and -q option to specify one
or two ports, allowing port-to-port transfers.
This commit is contained in:
Alexandre Ratchov
parent
044421aad7
commit
3d710ac721
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@ -24,8 +24,9 @@
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.Nm midicat
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.Bk -words
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.Op Fl d
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.Op Fl i Ar port
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.Op Fl o Ar port
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.Op Fl i Ar file
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.Op Fl o Ar file
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.Op Fl q Ar port
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.Ek
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.Sh DESCRIPTION
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The
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@ -36,21 +37,39 @@ The options are as follows:
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.Bl -tag -width Ds
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.It Fl d
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Dump transferred data in hex on stderr.
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.It Fl i Ar port
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.It Fl i Ar file
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Read MIDI data from this file instead of receiving it from the MIDI port.
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If the option argument is
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.Sq -
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then standard input will be used.
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.It Fl o Ar file
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Write MIDI data to this file instead of sending it to the MIDI port.
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If the option argument is
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.Sq -
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then standard output will be used.
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.It Fl q Ar port
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Use this
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.Xr sndio 7
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MIDI port as input instead of stdin.
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.It Fl o Ar port
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Use this
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.Xr sndio 7
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MIDI port as output instead of stdout.
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MIDI port for input/output.
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If the option is used twice, the first one specifies
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the input port and the second one the output port.
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.El
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.Pp
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If no files are specified, then
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.Nm
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transfers data from the MIDI input port to the MIDI output port.
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.Sh EXAMPLES
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Send the given file to
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.Pa rmidi/0 :
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.Bd -literal -offset indent
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$ midicat -i file.syx -q rmidi/0
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.Ed
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.Pp
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Dump data received from
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.Pa rmidi/0
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to stderr:
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.Bd -literal -offset indent
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$ midicat -di rmidi/0 >/dev/null
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$ midicat -d -q rmidi/0 -o /dev/null
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.Ed
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.Pp
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Send data from
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@ -58,8 +77,9 @@ Send data from
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to
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.Pa midithru/0:
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.Bd -literal -offset indent
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$ midicat -i rmidi/0 -o midithru/0
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$ midicat -q rmidi/0 -q midithru/0
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.Ed
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.Sh SEE ALSO
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.Xr midi 4 ,
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.Xr sndio 7
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.Xr sndio 7 ,
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.Xr sndiod 8
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@ -18,9 +18,11 @@
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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 <string.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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char usagestr[] = "usage: midicat [-d] [-i in-file] [-o out-file] "
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"[-q in-port] [-q out-port]\n";
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int
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main(int argc, char **argv)
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@ -28,25 +30,35 @@ main(int argc, char **argv)
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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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char *port0, *port1, *ifile, *ofile;
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int ifd, ofd;
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int dump, c, i, len, n, sep, mode;
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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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port0 = port1 = ifile = ofile = NULL;
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ih = oh = NULL;
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ifd = ofd = -1;
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while ((c = getopt(argc, argv, "di:o:q:")) != -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 'q':
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if (port0 == NULL)
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port0 = optarg;
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else if (port1 == NULL)
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port1 = optarg;
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else {
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fputs("too many -q options\n", stderr);
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return 1;
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}
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break;
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case 'i':
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in = optarg;
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ifile = optarg;
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break;
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case 'o':
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out = optarg;
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ofile = optarg;
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break;
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default:
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goto bad_usage;
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@ -59,44 +71,106 @@ main(int argc, char **argv)
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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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/* we don't support more than one data flow */
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if (ifile != NULL && ofile != NULL) {
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fputs("-i and -o are exclusive\n", stderr);
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return 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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/* second port makes sense only for port-to-port transfers */
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if (port1 != NULL && !(ifile == NULL && ofile == NULL)) {
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fputs("too many -q options\n", stderr);
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return 1;
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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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/* if there're neither files nor ports, then we've nothing to do */
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if (port0 == NULL && ifile == NULL && ofile == NULL)
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goto bad_usage;
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/* if no port specified, use default one */
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if (port0 == NULL)
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port0 = MIO_PORTANY;
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/* open input or output file (if any) */
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if (ifile) {
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if (strcmp(ifile, "-") == 0)
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ifd = STDIN_FILENO;
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else {
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ifd = open(ifile, O_RDONLY, 0);
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if (ifd < 0) {
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perror(ifile);
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return 1;
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}
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} else {
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len = read(STDIN_FILENO, buf, sizeof(buf));
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}
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} else if (ofile) {
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if (strcmp(ofile, "-") == 0)
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ofd = STDOUT_FILENO;
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else {
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ofd = open(ofile, O_WRONLY | O_CREAT | O_TRUNC, 0666);
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if (ofd < 0) {
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perror(ofile);
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return 1;
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}
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}
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}
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/* open first port for input and output (if output needed) */
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if (ofile)
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mode = MIO_IN;
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else if (ifile)
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mode = MIO_OUT;
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else if (port1 == NULL)
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mode = MIO_IN | MIO_OUT;
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else
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mode = MIO_IN;
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ih = mio_open(port0, mode, 0);
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if (ih == NULL) {
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fprintf(stderr, "%s: couldn't open port\n", port0);
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return 1;
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}
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/* open second port, output only */
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if (port1 == NULL)
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oh = ih;
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else {
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oh = mio_open(port1, MIO_OUT, 0);
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if (oh == NULL) {
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fprintf(stderr, "%s: couldn't open port\n", port1);
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exit(1);
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}
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}
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/* transfer until end-of-file or error */
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for (;;) {
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if (ifile != NULL) {
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len = read(ifd, 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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break;
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}
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} else {
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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", port0);
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break;
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}
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}
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if (ofile != NULL) {
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n = write(ofd, buf, len);
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if (n != len) {
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fprintf(stderr, "%s: short write\n", ofile);
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break;
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}
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} else {
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n = mio_write(oh, buf, len);
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if (n != len) {
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fprintf(stderr, "%s: disconnected\n", port1);
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break;
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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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@ -105,9 +179,15 @@ main(int argc, char **argv)
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}
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}
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}
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if (in)
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/* clean-up */
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if (port0)
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mio_close(ih);
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if (out)
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if (port1)
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mio_close(oh);
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if (ifile)
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close(ifd);
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if (ofile)
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close(ofd);
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return 0;
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}
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