mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-10 00:35:42 +01:00
397 lines
10 KiB
C
397 lines
10 KiB
C
/*
|
|
* connect / disconnect two subscriber ports
|
|
* ver.0.1.3
|
|
*
|
|
* Copyright (C) 1999 Takashi Iwai
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <getopt.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/asoundlib.h>
|
|
|
|
static void usage(void)
|
|
{
|
|
fprintf(stderr, "aconnect - ALSA sequencer connection manager\n");
|
|
fprintf(stderr, "Copyright (C) 1999-2000 Takashi Iwai\n");
|
|
fprintf(stderr, "Usage:\n");
|
|
fprintf(stderr, " * Connection/disconnection betwen two ports\n");
|
|
fprintf(stderr, " aconnect [-options] sender receiver\n");
|
|
fprintf(stderr, " sender, receiver = client:port pair\n");
|
|
fprintf(stderr, " -d,--disconnect disconnect\n");
|
|
fprintf(stderr, " -e,--exclusive exclusive connection\n");
|
|
fprintf(stderr, " -r,--real # convert real-time-stamp on queue\n");
|
|
fprintf(stderr, " -t,--tick # convert tick-time-stamp on queue\n");
|
|
fprintf(stderr, " -g,--group name set the group name\n");
|
|
fprintf(stderr, " * List connected ports (no subscription action)\n");
|
|
fprintf(stderr, " aconnect -i|-o [-options]\n");
|
|
fprintf(stderr, " -i,--input list input (readable) ports\n");
|
|
fprintf(stderr, " -o,--output list output (writable) ports\n");
|
|
fprintf(stderr, " -g,--group name specify the group name\n");
|
|
fprintf(stderr, " -l,--list list current connections of each port\n");
|
|
fprintf(stderr, " * Remove all exported connections\n");
|
|
fprintf(stderr, " -x, --removeall\n");
|
|
}
|
|
|
|
/*
|
|
* parse command line to client:port
|
|
*/
|
|
static int parse_address(snd_seq_addr_t *addr, char *arg)
|
|
{
|
|
char *p;
|
|
|
|
if (! isdigit(*arg))
|
|
return -1;
|
|
if ((p = strpbrk(arg, ":.")) == NULL)
|
|
return -1;
|
|
addr->client = atoi(arg);
|
|
addr->port = atoi(p + 1);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* check permission (capability) of specified port
|
|
*/
|
|
static int check_permission(snd_seq_port_info_t *pinfo, char *group, int perm)
|
|
{
|
|
if ((pinfo->capability & perm) == perm &&
|
|
! (pinfo->capability & SND_SEQ_PORT_CAP_NO_EXPORT))
|
|
return 1;
|
|
if (*group && (pinfo->cap_group & perm) == perm &&
|
|
! (pinfo->cap_group & SND_SEQ_PORT_CAP_NO_EXPORT))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* list subscribers of specified type
|
|
*/
|
|
static void list_each_subs(snd_seq_t *seq, snd_seq_query_subs_t *subs, int type, char *msg)
|
|
{
|
|
subs->type = type;
|
|
subs->index = 0;
|
|
while (snd_seq_query_port_subscribers(seq, subs) >= 0) {
|
|
if (subs->index == 0)
|
|
printf("\t%s: ", msg);
|
|
else
|
|
printf(", ");
|
|
printf("%d:%d", subs->addr.client, subs->addr.port);
|
|
if (subs->exclusive)
|
|
printf("[ex]");
|
|
if (subs->convert_time)
|
|
printf("[%s:%d]",
|
|
(subs->realtime ? "real" : "tick"),
|
|
subs->queue);
|
|
subs->index++;
|
|
}
|
|
if (subs->index)
|
|
printf("\n");
|
|
}
|
|
|
|
/*
|
|
* list subscribers
|
|
*/
|
|
static void list_subscribers(snd_seq_t *seq, int client, int port)
|
|
{
|
|
snd_seq_query_subs_t subs;
|
|
memset(&subs, 0, sizeof(subs));
|
|
subs.client = client;
|
|
subs.port = port;
|
|
list_each_subs(seq, &subs, SND_SEQ_QUERY_SUBS_READ, "Connecting To");
|
|
list_each_subs(seq, &subs, SND_SEQ_QUERY_SUBS_WRITE, "Connected From");
|
|
}
|
|
|
|
/*
|
|
* search all ports
|
|
*/
|
|
typedef void (*action_func_t)(snd_seq_t *seq, snd_seq_client_info_t *cinfo, snd_seq_port_info_t *pinfo, int count);
|
|
|
|
static void do_search_port(snd_seq_t *seq, char *group, int perm, action_func_t do_action)
|
|
{
|
|
snd_seq_client_info_t cinfo;
|
|
snd_seq_port_info_t pinfo;
|
|
int count;
|
|
|
|
cinfo.client = -1;
|
|
while (snd_seq_query_next_client(seq, &cinfo) >= 0) {
|
|
/* reset query info */
|
|
pinfo.client = cinfo.client;
|
|
pinfo.port = -1;
|
|
count = 0;
|
|
while (snd_seq_query_next_port(seq, &pinfo) >= 0) {
|
|
if (*group && strcmp(pinfo.group, group))
|
|
continue;
|
|
if (check_permission(&pinfo, group, perm)) {
|
|
do_action(seq, &cinfo, &pinfo, count);
|
|
count++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void print_port(snd_seq_t *seq, snd_seq_client_info_t *cinfo,
|
|
snd_seq_port_info_t *pinfo, int count)
|
|
{
|
|
if (! count) {
|
|
printf("client %d: '%s' [group=%s] [type=%s]\n",
|
|
cinfo->client, cinfo->name, cinfo->group,
|
|
(cinfo->type == USER_CLIENT ? "user" : "kernel"));
|
|
}
|
|
printf(" %3d '%-16s' [group=%s]\n",
|
|
pinfo->port, pinfo->name, pinfo->group);
|
|
}
|
|
|
|
static void print_port_and_subs(snd_seq_t *seq, snd_seq_client_info_t *cinfo,
|
|
snd_seq_port_info_t *pinfo, int count)
|
|
{
|
|
print_port(seq, cinfo, pinfo, count);
|
|
list_subscribers(seq, pinfo->client, pinfo->port);
|
|
}
|
|
|
|
|
|
/*
|
|
* list all ports
|
|
*/
|
|
|
|
static void list_ports(snd_seq_t *seq, char *group, int perm, int list_subs)
|
|
{
|
|
if (list_subs)
|
|
do_search_port(seq, group, perm, print_port_and_subs);
|
|
else
|
|
do_search_port(seq, group, perm, print_port);
|
|
}
|
|
|
|
/*
|
|
* remove all (exported) connections
|
|
*/
|
|
static void remove_connection(snd_seq_t *seq, snd_seq_client_info_t *cinfo,
|
|
snd_seq_port_info_t *pinfo, int count)
|
|
{
|
|
snd_seq_query_subs_t query;
|
|
|
|
memset(&query, 0, sizeof(query));
|
|
query.client = pinfo->client;
|
|
query.port = pinfo->port;
|
|
|
|
query.type = SND_SEQ_QUERY_SUBS_READ;
|
|
query.index = 0;
|
|
for (query.index = 0; snd_seq_query_port_subscribers(seq, &query) >= 0;
|
|
query.index++) {
|
|
snd_seq_port_info_t port;
|
|
snd_seq_port_subscribe_t subs;
|
|
if (snd_seq_get_any_port_info(seq, query.addr.client, query.addr.port, &port) < 0)
|
|
continue;
|
|
if (port.capability & SND_SEQ_PORT_CAP_NO_EXPORT)
|
|
continue;
|
|
memset(&subs, 0, sizeof(subs));
|
|
subs.queue = query.queue;
|
|
subs.sender.client = query.client;
|
|
subs.sender.port = query.port;
|
|
subs.dest.client = query.addr.client;
|
|
subs.dest.port = query.addr.port;
|
|
snd_seq_unsubscribe_port(seq, &subs);
|
|
}
|
|
|
|
query.type = SND_SEQ_QUERY_SUBS_WRITE;
|
|
query.index = 0;
|
|
for (query.index = 0; snd_seq_query_port_subscribers(seq, &query) >= 0;
|
|
query.index++) {
|
|
snd_seq_port_info_t port;
|
|
snd_seq_port_subscribe_t subs;
|
|
if (snd_seq_get_any_port_info(seq, query.addr.client, query.addr.port, &port) < 0)
|
|
continue;
|
|
if (port.capability & SND_SEQ_PORT_CAP_NO_EXPORT)
|
|
continue;
|
|
memset(&subs, 0, sizeof(subs));
|
|
subs.queue = query.queue;
|
|
subs.sender.client = query.addr.client;
|
|
subs.sender.port = query.addr.port;
|
|
subs.dest.client = query.client;
|
|
subs.dest.port = query.port;
|
|
snd_seq_unsubscribe_port(seq, &subs);
|
|
}
|
|
}
|
|
|
|
static void remove_all_connections(snd_seq_t *seq)
|
|
{
|
|
do_search_port(seq, "", 0, remove_connection);
|
|
}
|
|
|
|
|
|
/*
|
|
* main..
|
|
*/
|
|
|
|
enum {
|
|
SUBSCRIBE, UNSUBSCRIBE, LIST_INPUT, LIST_OUTPUT, REMOVE_ALL
|
|
};
|
|
|
|
static struct option long_option[] = {
|
|
{"disconnect", 0, NULL, 'd'},
|
|
{"input", 0, NULL, 'i'},
|
|
{"output", 0, NULL, 'o'},
|
|
{"group", 1, NULL, 'g'},
|
|
{"real", 1, NULL, 'r'},
|
|
{"tick", 1, NULL, 't'},
|
|
{"exclusive", 0, NULL, 'e'},
|
|
{"list", 0, NULL, 'l'},
|
|
{"removeall", 0, NULL, 'x'},
|
|
{NULL, 0, NULL, 0},
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int c;
|
|
snd_seq_t *seq;
|
|
int queue = 0, convert_time = 0, convert_real = 0, exclusive = 0;
|
|
int command = SUBSCRIBE;
|
|
char *group = "";
|
|
int client;
|
|
int list_subs = 0;
|
|
snd_seq_client_info_t cinfo;
|
|
snd_seq_port_subscribe_t subs;
|
|
|
|
while ((c = getopt_long(argc, argv, "diog:r:t:elx", long_option, NULL)) != -1) {
|
|
switch (c) {
|
|
case 'd':
|
|
command = UNSUBSCRIBE;
|
|
break;
|
|
case 'i':
|
|
command = LIST_INPUT;
|
|
break;
|
|
case 'o':
|
|
command = LIST_OUTPUT;
|
|
break;
|
|
case 'g':
|
|
group = optarg;
|
|
break;
|
|
case 'e':
|
|
exclusive = 1;
|
|
break;
|
|
case 'r':
|
|
queue = atoi(optarg);
|
|
convert_time = 1;
|
|
convert_real = 1;
|
|
break;
|
|
case 't':
|
|
queue = atoi(optarg);
|
|
convert_time = 1;
|
|
convert_real = 0;
|
|
break;
|
|
case 'l':
|
|
list_subs = 1;
|
|
break;
|
|
case 'x':
|
|
command = REMOVE_ALL;
|
|
break;
|
|
default:
|
|
usage();
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (snd_seq_open(&seq, SND_SEQ_OPEN) < 0) {
|
|
fprintf(stderr, "can't open sequencer\n");
|
|
return 1;
|
|
}
|
|
|
|
switch (command) {
|
|
case LIST_INPUT:
|
|
list_ports(seq, group, SND_SEQ_PORT_CAP_READ|SND_SEQ_PORT_CAP_SUBS_READ, list_subs);
|
|
snd_seq_close(seq);
|
|
return 0;
|
|
case LIST_OUTPUT:
|
|
list_ports(seq, group, SND_SEQ_PORT_CAP_WRITE|SND_SEQ_PORT_CAP_SUBS_WRITE, list_subs);
|
|
snd_seq_close(seq);
|
|
return 0;
|
|
case REMOVE_ALL:
|
|
remove_all_connections(seq);
|
|
snd_seq_close(seq);
|
|
return 0;
|
|
}
|
|
|
|
/* connection or disconnection */
|
|
|
|
if (optind + 2 > argc) {
|
|
snd_seq_close(seq);
|
|
usage();
|
|
exit(1);
|
|
}
|
|
|
|
if ((client = snd_seq_client_id(seq)) < 0) {
|
|
snd_seq_close(seq);
|
|
fprintf(stderr, "can't get client id\n");
|
|
return 1;
|
|
}
|
|
|
|
/* set client info */
|
|
memset(&cinfo, 0, sizeof(cinfo));
|
|
cinfo.client = client;
|
|
cinfo.type = USER_CLIENT;
|
|
strcpy(cinfo.name, "ALSA Connector");
|
|
strncpy(cinfo.group, group, sizeof(cinfo.group) - 1);
|
|
if (snd_seq_set_client_info(seq, &cinfo) < 0) {
|
|
snd_seq_close(seq);
|
|
fprintf(stderr, "can't set client info\n");
|
|
return 0;
|
|
}
|
|
|
|
/* set subscription */
|
|
memset(&subs, 0, sizeof(subs));
|
|
if (parse_address(&subs.sender, argv[optind]) < 0) {
|
|
fprintf(stderr, "invalid sender address %s\n", argv[optind]);
|
|
return 1;
|
|
}
|
|
if (parse_address(&subs.dest, argv[optind + 1]) < 0) {
|
|
fprintf(stderr, "invalid destination address %s\n", argv[optind + 1]);
|
|
return 1;
|
|
}
|
|
subs.queue = queue;
|
|
subs.exclusive = exclusive;
|
|
subs.convert_time = convert_time;
|
|
subs.realtime = convert_real;
|
|
|
|
if (command == UNSUBSCRIBE) {
|
|
if (snd_seq_get_port_subscription(seq, &subs) < 0) {
|
|
snd_seq_close(seq);
|
|
fprintf(stderr, "No subscription is found\n");
|
|
return 1;
|
|
}
|
|
if (snd_seq_unsubscribe_port(seq, &subs) < 0) {
|
|
snd_seq_close(seq);
|
|
fprintf(stderr, "Disconnection failed (%s)\n", snd_strerror(errno));
|
|
return 1;
|
|
}
|
|
} else {
|
|
if (snd_seq_get_port_subscription(seq, &subs) == 0) {
|
|
snd_seq_close(seq);
|
|
fprintf(stderr, "Connection is already subscribed\n");
|
|
return 1;
|
|
}
|
|
if (snd_seq_subscribe_port(seq, &subs) < 0) {
|
|
snd_seq_close(seq);
|
|
fprintf(stderr, "Connection failed (%s)\n", snd_strerror(errno));
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
snd_seq_close(seq);
|
|
|
|
return 0;
|
|
}
|