mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-11-03 09:01:52 -05:00
Moved aconnect and aseqnet sequencer utilities into the alsa-utils package.
This commit is contained in:
Jaroslav Kysela
parent
7ab9b22d88
commit
62380b0f43
6 changed files with 0 additions and 1144 deletions
|
|
@ -1,50 +0,0 @@
|
||||||
================================================================
|
|
||||||
aconnect - control subscriptions
|
|
||||||
ver.0.1.3
|
|
||||||
Copyright (C) 1999-2000 Takashi Iwai
|
|
||||||
================================================================
|
|
||||||
|
|
||||||
aconnect is a utility to control subscriptions of two ports as the
|
|
||||||
third "manager" client.
|
|
||||||
|
|
||||||
For example, the following connects two ports, from 64:0 to 65:0.
|
|
||||||
|
|
||||||
% aconnect 64:0 65:0
|
|
||||||
|
|
||||||
To disconnect the existing subscription, use -d option.
|
|
||||||
|
|
||||||
% aconnect -d 64:0 65:0
|
|
||||||
|
|
||||||
To see which port is available as input port, run the following
|
|
||||||
command:
|
|
||||||
|
|
||||||
% aconnect -i
|
|
||||||
client 0: 'System' [group=system] [type=kernel]
|
|
||||||
0 'Timer ' [group=system]
|
|
||||||
1 'Announce ' [group=system]
|
|
||||||
client 64: '0: MIDI Synth' [group=] [type=kernel]
|
|
||||||
0 'card 0: synth-midi: 0' [group=device]
|
|
||||||
|
|
||||||
Similary, to see the output ports, use -o flag.
|
|
||||||
|
|
||||||
% aconnect -o
|
|
||||||
client 64: '0: MIDI Synth' [group=] [type=kernel]
|
|
||||||
0 'card 0: synth-midi: 0' [group=device]
|
|
||||||
client 65: 'AWE Wave Table Synth : 0' [group=device] [type=kernel]
|
|
||||||
0 'Emu8000 port 0 ' [group=device]
|
|
||||||
1 'Emu8000 port 1 ' [group=device]
|
|
||||||
2 'Emu8000 port 2 ' [group=device]
|
|
||||||
3 'Emu8000 port 3 ' [group=device]
|
|
||||||
|
|
||||||
Some ports may have permission for its own group.
|
|
||||||
In such a case, change the group of aconnect to the appropriate one by
|
|
||||||
using -g option.
|
|
||||||
|
|
||||||
The option -l together with -i or -o shows subscribers for each port.
|
|
||||||
|
|
||||||
Ports are connected exclusively when the option -e is specified.
|
|
||||||
|
|
||||||
For modifying time-stamp with a queue, use -r or -t option followed by
|
|
||||||
a queue index which updates the time-stamp. Former uses real-time queue,
|
|
||||||
while the latter uses tick queue. The queue must be used (not necessarily
|
|
||||||
owned) by the receiver client.
|
|
||||||
|
|
@ -1,52 +0,0 @@
|
||||||
================================================================
|
|
||||||
ALSA sequencer connectors over network
|
|
||||||
ver.0.1
|
|
||||||
Copyright (C) 1999-2000 Takashi Iwai
|
|
||||||
================================================================
|
|
||||||
|
|
||||||
* ASEQNET
|
|
||||||
|
|
||||||
aseqnet is a sequencer client which sends/receives events over
|
|
||||||
network. Suppose two hosts (hostA and hostB) connected by network.
|
|
||||||
You need to run ALSA system on both hosts. Then, start aseqnet as a
|
|
||||||
server on hostA:
|
|
||||||
|
|
||||||
hostA% aseqnet
|
|
||||||
sequencer opened: 128:0
|
|
||||||
|
|
||||||
A user client 128 with port 0 was opened. (The client number may
|
|
||||||
vary.) At next, start client on hostB. The argument is the hostname
|
|
||||||
where server is running.
|
|
||||||
|
|
||||||
hostB% aseqnet hostA
|
|
||||||
sequencer opened: 132:0
|
|
||||||
|
|
||||||
Now events sent to hostA:128:0 is transferred to hostB:132:0, and vice
|
|
||||||
versa.
|
|
||||||
|
|
||||||
You can connect these ports arbitrary to other sequencer ports.
|
|
||||||
For example, connect hostB:132:0 to a MIDI output device 65:0. The
|
|
||||||
aconnect utility can be used for this:
|
|
||||||
|
|
||||||
hostB% aconnect 132:0 65:0
|
|
||||||
|
|
||||||
Events to hostA:128:0 will be delivered indirectly to hostB:65:0.
|
|
||||||
You'll hear MIDI sounds as following:
|
|
||||||
|
|
||||||
hostA% pmidi -p 128:0 foo.mid
|
|
||||||
|
|
||||||
The multiple clients may exist simultaneously. If hostC is connected
|
|
||||||
as a client to hostA, events from from hostA are sent to all connected
|
|
||||||
network clients, hostB and hostC. However, only one connection is
|
|
||||||
allowed from a client to a server.
|
|
||||||
|
|
||||||
To disconnect network, stop all clients before server by ctrl-C or
|
|
||||||
sending signal to them. The server will automatically quit.
|
|
||||||
|
|
||||||
The available options are:
|
|
||||||
|
|
||||||
-p port : specify the TCP port number or TCP service name.
|
|
||||||
Default value is 9009 (I don't know it's allowed..)
|
|
||||||
-s addr : explicit read-subscription to the given address
|
|
||||||
(client:addr).
|
|
||||||
-d addr : explicit write-subscription to the given address.
|
|
||||||
127
test/aconnect.1
127
test/aconnect.1
|
|
@ -1,127 +0,0 @@
|
||||||
.TH aconnect 1 "January 1, 2000"
|
|
||||||
.LO 1
|
|
||||||
.SH NAME
|
|
||||||
aconnect \- ALSA sequencer connection manager
|
|
||||||
|
|
||||||
.SH SYNOPSIS
|
|
||||||
.B aconnect
|
|
||||||
[\-d] [-options] sender receiver
|
|
||||||
.br
|
|
||||||
.B aconnect
|
|
||||||
\-i|-o [-options]
|
|
||||||
|
|
||||||
.SH DESCRIPTION
|
|
||||||
.B aconnect
|
|
||||||
is a utility to connect and disconnect two existing ports on ALSA sequencer
|
|
||||||
system.
|
|
||||||
The ports with the arbitrary subscription permission, such as created
|
|
||||||
by
|
|
||||||
.B aseqview(1),
|
|
||||||
can be connected to any (MIDI) device ports using
|
|
||||||
.B aconnect.
|
|
||||||
For example, to connect from port 64:0 to 65:0, run as follows:
|
|
||||||
.IP "" 4
|
|
||||||
% aconnect 64:0 65:0
|
|
||||||
.PP
|
|
||||||
The connection is one-way, and the whole data to the sender port (64:0)
|
|
||||||
is redirected to the receiver port (65:0). When another port (e.g. 65:1)
|
|
||||||
is attached to the same sender port, the data is sent to both receiver
|
|
||||||
ports.
|
|
||||||
For disconnection, use
|
|
||||||
.B \-d
|
|
||||||
option.
|
|
||||||
.IP "" 4
|
|
||||||
% aconnect -d 64:0 65:0
|
|
||||||
.PP
|
|
||||||
Another function of
|
|
||||||
.B aconnect
|
|
||||||
is to list the present ports
|
|
||||||
on the given condition.
|
|
||||||
The input ports, which may become
|
|
||||||
.I sender
|
|
||||||
ports, can be listed with
|
|
||||||
.B \-i
|
|
||||||
option.
|
|
||||||
.IP "" 4
|
|
||||||
% aconnect -i
|
|
||||||
.br
|
|
||||||
client 0: 'System' [group=system] [type=kernel]
|
|
||||||
.in +4
|
|
||||||
0 'Timer ' [group=system]
|
|
||||||
.br
|
|
||||||
1 'Announce ' [group=system]
|
|
||||||
.in -4
|
|
||||||
client 64: '0: MIDI Synth' [group=] [type=kernel]
|
|
||||||
.in +4
|
|
||||||
0 'card 0: synth-midi: 0' [group=device]
|
|
||||||
.in -4
|
|
||||||
.PP
|
|
||||||
Similary, to see the output ports, use
|
|
||||||
.B \-o
|
|
||||||
flag.
|
|
||||||
|
|
||||||
.SH OPTIONS
|
|
||||||
.SS CONNNECTION MANAGEMENT
|
|
||||||
.TP
|
|
||||||
.B \-d, --disconnect
|
|
||||||
Disconnect the given subscription.
|
|
||||||
.TP
|
|
||||||
.B \-e, --exclusive
|
|
||||||
Connect ports with exclusvie mode.
|
|
||||||
Both sender and receiver ports can be no longer connected by any other ports.
|
|
||||||
.TP
|
|
||||||
.B \-r, --real queue
|
|
||||||
Convert time-stamps of event packets to the current value of the given
|
|
||||||
.I real-time
|
|
||||||
queue.
|
|
||||||
This is option is, however, not so useful, since
|
|
||||||
the receiver port must use (not necessarily own) the specified queue.
|
|
||||||
.TP
|
|
||||||
.B \-t, --tick queue
|
|
||||||
Like
|
|
||||||
.B -r
|
|
||||||
option, but
|
|
||||||
time-stamps are converted to the current value of the given
|
|
||||||
.I tick
|
|
||||||
queue.
|
|
||||||
.TP
|
|
||||||
.B \-g, --group name
|
|
||||||
Specify the group name that
|
|
||||||
.B aconnect
|
|
||||||
uses.
|
|
||||||
Some ports may have special permissions, so that only the same group
|
|
||||||
may subscribe to them. In such a case,
|
|
||||||
.B aconnect
|
|
||||||
can fake the group name
|
|
||||||
with this option.
|
|
||||||
|
|
||||||
.SS LIST PORTS
|
|
||||||
.TP
|
|
||||||
.B \-i, --input
|
|
||||||
List existing input (readable) ports.
|
|
||||||
This option is exclusive to
|
|
||||||
.B \-o.
|
|
||||||
.TP
|
|
||||||
.B \-o, --output
|
|
||||||
List existing output (writable) ports.
|
|
||||||
This option is exclusive to
|
|
||||||
.B \-i.
|
|
||||||
.TP
|
|
||||||
.B \-l, --list
|
|
||||||
List the current connection status. The connected and connecting ports
|
|
||||||
from/to each port are listed together.
|
|
||||||
The suffix flag
|
|
||||||
.B [ex]
|
|
||||||
means the connection is exclusive.
|
|
||||||
The suffix flag
|
|
||||||
.B [real:#]
|
|
||||||
and
|
|
||||||
.B [tick:#]
|
|
||||||
mean the connection includes real-time and tick conversion on the listed
|
|
||||||
queue, respectively.
|
|
||||||
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
aseqnet(1), aseqview(1)
|
|
||||||
|
|
||||||
.SH AUTHOR
|
|
||||||
Takashi Iwai <iwai@ww.uni-erlangen.de>.
|
|
||||||
305
test/aconnect.c
305
test/aconnect.c
|
|
@ -1,305 +0,0 @@
|
||||||
/*
|
|
||||||
* 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");
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* 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 && strcmp(pinfo->group, group) == 0 &&
|
|
||||||
(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");
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* list all ports
|
|
||||||
*/
|
|
||||||
static void list_ports(snd_seq_t *seq, char *group, int perm, int list_subs)
|
|
||||||
{
|
|
||||||
snd_seq_client_info_t cinfo;
|
|
||||||
snd_seq_port_info_t pinfo;
|
|
||||||
int client_printed;
|
|
||||||
|
|
||||||
cinfo.client = -1;
|
|
||||||
cinfo.name[0] = 0;
|
|
||||||
cinfo.group[0] = 0;
|
|
||||||
while (snd_seq_query_next_client(seq, &cinfo) >= 0) {
|
|
||||||
/* reset query info */
|
|
||||||
pinfo.client = cinfo.client;
|
|
||||||
pinfo.port = -1;
|
|
||||||
pinfo.name[0] = 0;
|
|
||||||
strncpy(pinfo.group, group, sizeof(pinfo.group));
|
|
||||||
client_printed = 0;
|
|
||||||
while (snd_seq_query_next_port(seq, &pinfo) >= 0) {
|
|
||||||
if (check_permission(&pinfo, group, perm)) {
|
|
||||||
if (! client_printed) {
|
|
||||||
printf("client %d: '%s' [group=%s] [type=%s]\n",
|
|
||||||
cinfo.client, cinfo.name, cinfo.group,
|
|
||||||
(cinfo.type == USER_CLIENT ? "user" : "kernel"));
|
|
||||||
client_printed = 1;
|
|
||||||
}
|
|
||||||
printf(" %3d '%-16s' [group=%s]\n", pinfo.port, pinfo.name, pinfo.group);
|
|
||||||
if (list_subs)
|
|
||||||
list_subscribers(seq, pinfo.client, pinfo.port);
|
|
||||||
}
|
|
||||||
/* reset query names */
|
|
||||||
pinfo.name[0] = 0;
|
|
||||||
strncpy(pinfo.group, group, sizeof(pinfo.group));
|
|
||||||
}
|
|
||||||
/* reset query names */
|
|
||||||
cinfo.name[0] = 0;
|
|
||||||
cinfo.group[0] = 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
enum {
|
|
||||||
SUBSCRIBE, UNSUBSCRIBE, LIST_INPUT, LIST_OUTPUT
|
|
||||||
};
|
|
||||||
|
|
||||||
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'},
|
|
||||||
{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:el", 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;
|
|
||||||
default:
|
|
||||||
usage();
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (snd_seq_open(&seq, SND_SEQ_OPEN) < 0) {
|
|
||||||
fprintf(stderr, "can't open sequencer\n");
|
|
||||||
return 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (command == 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;
|
|
||||||
} else if (command == 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;
|
|
||||||
}
|
|
||||||
|
|
||||||
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;
|
|
||||||
}
|
|
||||||
|
|
@ -1,78 +0,0 @@
|
||||||
.TH aseqnet 1 "January 1, 2000"
|
|
||||||
.LO 1
|
|
||||||
.SH NAME
|
|
||||||
aseqnet \- ALSA sequencer connectors over network
|
|
||||||
|
|
||||||
.SH SYNOPSIS
|
|
||||||
.B aseqnet
|
|
||||||
[remotehost]
|
|
||||||
|
|
||||||
.SH DESCRIPTION
|
|
||||||
.B aseqnet
|
|
||||||
is an ALSA sequencer client which sends and receives event packets
|
|
||||||
over network.
|
|
||||||
Suppose two hosts connected by network,
|
|
||||||
.I hostA
|
|
||||||
as a server
|
|
||||||
and
|
|
||||||
.I hostB
|
|
||||||
as a client.
|
|
||||||
The ALSA sequencer system must be running on both hosts.
|
|
||||||
For creating the server port, run the following on hostA:
|
|
||||||
.IP "" 4
|
|
||||||
hostA% aseqnet
|
|
||||||
.br
|
|
||||||
sequencer opened: 128:0
|
|
||||||
.PP
|
|
||||||
Then a user client 128 with port 0 was opened on hostA.
|
|
||||||
(The client number may vary.)
|
|
||||||
For creating the (network-)client port, run
|
|
||||||
.B aseqnet
|
|
||||||
with the hostname of the server:
|
|
||||||
.IP "" 4
|
|
||||||
hostB% aseqnet hostA
|
|
||||||
.br
|
|
||||||
sequencer opened: 132:0
|
|
||||||
.PP
|
|
||||||
Now all events sent to hostA:128:0 are transferred to hostB:132:0, and vice
|
|
||||||
versa.
|
|
||||||
.PP
|
|
||||||
The ports created by
|
|
||||||
.B aseqnet
|
|
||||||
can be connected arbitrary to other sequencer ports via
|
|
||||||
.B aconnect(1).
|
|
||||||
For example, to connect hostB:132:0 to a MIDI output device 65:0:
|
|
||||||
.IP "" 4
|
|
||||||
hostB% aconnect 132:0 65:0
|
|
||||||
.PP
|
|
||||||
Then events to hostA:128:0 will be delivered to hostB:65:0.
|
|
||||||
The following command plays MIDI on
|
|
||||||
.I hostB.
|
|
||||||
.IP "" 4
|
|
||||||
hostA% pmidi -p 128:0 foo.mid
|
|
||||||
.PP
|
|
||||||
The multiple clients may exist simultaneously. If
|
|
||||||
.I hostC
|
|
||||||
is connected as a client to hostA, events from from hostA are sent
|
|
||||||
to all connected network clients, i.e. hostB and hostC.
|
|
||||||
However, only one connection is allowed from a client to a server.
|
|
||||||
.PP
|
|
||||||
To disconnect network, stop all clients before server by ctrl-C or
|
|
||||||
sending signal to them. The server will automatically quit.
|
|
||||||
|
|
||||||
.SH OPTIONS
|
|
||||||
.TP
|
|
||||||
.B \-p port
|
|
||||||
Specify the TCP port number or TCP service name.
|
|
||||||
.TP
|
|
||||||
.B \-s addr
|
|
||||||
Subscribe to the given address for read automatically.
|
|
||||||
.TP
|
|
||||||
.B \-d addr
|
|
||||||
Subscribe to the given address for write automatically.
|
|
||||||
|
|
||||||
.SH "SEE ALSO"
|
|
||||||
aconnect(1), pmidi(1)
|
|
||||||
|
|
||||||
.SH AUTHOR
|
|
||||||
Takashi Iwai <iwai@ww.uni-erlangen.de>.
|
|
||||||
532
test/aseqnet.c
532
test/aseqnet.c
|
|
@ -1,532 +0,0 @@
|
||||||
/*
|
|
||||||
* network server/client for ALSA sequencer
|
|
||||||
* ver.0.1
|
|
||||||
*
|
|
||||||
* Copyright (C) 1999-2000 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 <stdlib.h>
|
|
||||||
#include <ctype.h>
|
|
||||||
#include <string.h>
|
|
||||||
#include <netinet/in.h>
|
|
||||||
#include <netdb.h>
|
|
||||||
#include <sys/asoundlib.h>
|
|
||||||
#include <getopt.h>
|
|
||||||
#include <signal.h>
|
|
||||||
|
|
||||||
/*
|
|
||||||
* prototypes
|
|
||||||
*/
|
|
||||||
static void usage(void);
|
|
||||||
static void init_buf(void);
|
|
||||||
static void close_files(void);
|
|
||||||
static void init_seq(char *source, char *dest);
|
|
||||||
static int get_port(char *service);
|
|
||||||
static void sigterm_exit(int sig);
|
|
||||||
static void init_server(int port);
|
|
||||||
static void init_client(char *server, int port);
|
|
||||||
static void do_loop(void);
|
|
||||||
static int copy_local_to_remote(void);
|
|
||||||
static int copy_remote_to_local(int fd);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* default TCP port number
|
|
||||||
*/
|
|
||||||
#define DEFAULT_PORT 9009
|
|
||||||
|
|
||||||
/*
|
|
||||||
* local input buffer
|
|
||||||
*/
|
|
||||||
static char *readbuf;
|
|
||||||
static int max_rdlen;
|
|
||||||
static char *writebuf;
|
|
||||||
static int cur_wrlen, max_wrlen;
|
|
||||||
|
|
||||||
#define MAX_BUF_EVENTS 200
|
|
||||||
#define MAX_CONNECTION 10
|
|
||||||
|
|
||||||
static snd_seq_t *handle;
|
|
||||||
static int seqfd, sockfd, netfd[MAX_CONNECTION] = {[0 ... MAX_CONNECTION-1] = -1};
|
|
||||||
static int max_connection;
|
|
||||||
static int cur_connected;
|
|
||||||
static int seq_port;
|
|
||||||
|
|
||||||
static int server_mode;
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* main routine
|
|
||||||
*/
|
|
||||||
|
|
||||||
static struct option long_option[] = {
|
|
||||||
{"port", 1, NULL, 'p'},
|
|
||||||
{"source", 1, NULL, 's'},
|
|
||||||
{"dest", 1, NULL, 'd'},
|
|
||||||
{"help", 0, NULL, 'h'},
|
|
||||||
{NULL, 0, NULL, 0},
|
|
||||||
};
|
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
int c;
|
|
||||||
int port = DEFAULT_PORT;
|
|
||||||
char *source = NULL, *dest = NULL;
|
|
||||||
|
|
||||||
while ((c = getopt_long(argc, argv, "p:s:d:", long_option, NULL)) != -1) {
|
|
||||||
switch (c) {
|
|
||||||
case 'p':
|
|
||||||
if (isdigit(*optarg))
|
|
||||||
port = atoi(optarg);
|
|
||||||
else
|
|
||||||
port = get_port(optarg);
|
|
||||||
break;
|
|
||||||
case 's':
|
|
||||||
source = optarg;
|
|
||||||
break;
|
|
||||||
case 'd':
|
|
||||||
dest = optarg;
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
usage();
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
signal(SIGINT, sigterm_exit);
|
|
||||||
signal(SIGTERM, sigterm_exit);
|
|
||||||
|
|
||||||
init_buf();
|
|
||||||
init_seq(source, dest);
|
|
||||||
|
|
||||||
if (optind >= argc) {
|
|
||||||
server_mode = 1;
|
|
||||||
max_connection = MAX_CONNECTION;
|
|
||||||
init_server(port);
|
|
||||||
} else {
|
|
||||||
server_mode = 0;
|
|
||||||
max_connection = 1;
|
|
||||||
init_client(argv[optind], port);
|
|
||||||
}
|
|
||||||
|
|
||||||
do_loop();
|
|
||||||
|
|
||||||
close_files();
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* print usage
|
|
||||||
*/
|
|
||||||
static void usage(void)
|
|
||||||
{
|
|
||||||
fprintf(stderr, "aseqnet - network client/server on ALSA sequencer\n");
|
|
||||||
fprintf(stderr, " Copyright (C) 1999 Takashi Iwai\n");
|
|
||||||
fprintf(stderr, "usage:\n");
|
|
||||||
fprintf(stderr, " server mode: aseqnet [-options]\n");
|
|
||||||
fprintf(stderr, " client mode: aseqnet [-options] server_host\n");
|
|
||||||
fprintf(stderr, "options:\n");
|
|
||||||
fprintf(stderr, " -p,--port # : sepcify TCP port (digit or service name)\n");
|
|
||||||
fprintf(stderr, " -s,--source addr : read from given addr (client:port)\n");
|
|
||||||
fprintf(stderr, " -d,--dest addr : write to given addr (client:port)\n");
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* allocate and initialize buffers
|
|
||||||
*/
|
|
||||||
static void init_buf(void)
|
|
||||||
{
|
|
||||||
max_wrlen = MAX_BUF_EVENTS * sizeof(snd_seq_event_t);
|
|
||||||
max_rdlen = MAX_BUF_EVENTS * sizeof(snd_seq_event_t);
|
|
||||||
writebuf = malloc(max_wrlen);
|
|
||||||
readbuf = malloc(max_rdlen);
|
|
||||||
if (writebuf == NULL || readbuf == NULL) {
|
|
||||||
fprintf(stderr, "can't malloc\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
memset(writebuf, 0, max_wrlen);
|
|
||||||
memset(readbuf, 0, max_rdlen);
|
|
||||||
cur_wrlen = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* parse client:port argument
|
|
||||||
*/
|
|
||||||
static int parse_addr(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;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* close all files
|
|
||||||
*/
|
|
||||||
static void close_files(void)
|
|
||||||
{
|
|
||||||
int i;
|
|
||||||
fprintf(stderr, "closing files..\n");
|
|
||||||
for (i = 0; i < max_connection; i++) {
|
|
||||||
if (netfd[i] >= 0)
|
|
||||||
close(netfd[i]);
|
|
||||||
}
|
|
||||||
if (sockfd >= 0)
|
|
||||||
close(sockfd);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* initialize sequencer
|
|
||||||
*/
|
|
||||||
static void init_seq(char *source, char *dest)
|
|
||||||
{
|
|
||||||
snd_seq_addr_t addr;
|
|
||||||
|
|
||||||
if (snd_seq_open(&handle, SND_SEQ_OPEN) < 0) {
|
|
||||||
perror("snd_seq_open");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
seqfd = snd_seq_file_descriptor(handle);
|
|
||||||
snd_seq_block_mode(handle, 0);
|
|
||||||
|
|
||||||
/* set client info */
|
|
||||||
if (server_mode)
|
|
||||||
snd_seq_set_client_name(handle, "Net Server");
|
|
||||||
else
|
|
||||||
snd_seq_set_client_name(handle, "Net Client");
|
|
||||||
|
|
||||||
/* create a port */
|
|
||||||
seq_port = snd_seq_create_simple_port(handle, "Network",
|
|
||||||
SND_SEQ_PORT_CAP_READ |
|
|
||||||
SND_SEQ_PORT_CAP_WRITE |
|
|
||||||
SND_SEQ_PORT_CAP_SUBS_READ |
|
|
||||||
SND_SEQ_PORT_CAP_SUBS_WRITE,
|
|
||||||
SND_SEQ_PORT_TYPE_MIDI_GENERIC);
|
|
||||||
if (seq_port < 0) {
|
|
||||||
perror("create seq port");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
fprintf(stderr, "sequencer opened: %d:%d\n",
|
|
||||||
snd_seq_client_id(handle), seq_port);
|
|
||||||
|
|
||||||
/* explicit subscriptions */
|
|
||||||
if (source) {
|
|
||||||
/* read subscription */
|
|
||||||
if (parse_addr(&addr, source) < 0) {
|
|
||||||
fprintf(stderr, "invalid source address %s\n", source);
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
if (snd_seq_connect_from(handle, seq_port, addr.client, addr.port)) {
|
|
||||||
perror("read subscription");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (dest) {
|
|
||||||
/* write subscription */
|
|
||||||
if (parse_addr(&addr, dest) < 0) {
|
|
||||||
fprintf(stderr, "invalid destination address %s\n", dest);
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
if (snd_seq_connect_to(handle, seq_port, addr.client, addr.port)) {
|
|
||||||
perror("write subscription");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* convert from string to TCP port number
|
|
||||||
*/
|
|
||||||
static int get_port(char *service)
|
|
||||||
{
|
|
||||||
struct servent *sp;
|
|
||||||
|
|
||||||
if ((sp = getservbyname(service, "tcp")) == NULL){
|
|
||||||
fprintf(stderr, "%s is not found in /etc/services\n", service);
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
return sp->s_port;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* signal handler
|
|
||||||
*/
|
|
||||||
static void sigterm_exit(int sig)
|
|
||||||
{
|
|
||||||
close_files();
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* initialize network server
|
|
||||||
*/
|
|
||||||
static void init_server(int port)
|
|
||||||
{
|
|
||||||
int i;
|
|
||||||
struct sockaddr_in addr;
|
|
||||||
|
|
||||||
memset(&addr, 0, sizeof(addr));
|
|
||||||
|
|
||||||
addr.sin_family = AF_INET;
|
|
||||||
addr.sin_addr.s_addr = INADDR_ANY;
|
|
||||||
addr.sin_port = htons(port);
|
|
||||||
|
|
||||||
sockfd = socket(AF_INET, SOCK_STREAM, 0);
|
|
||||||
if (sockfd < 0) {
|
|
||||||
fprintf(stderr, "can't create a socket\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (bind(sockfd, &addr, sizeof(addr)) < 0) {
|
|
||||||
fprintf(stderr, "can't bind address\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (listen(sockfd, 5) < 0) {
|
|
||||||
fprintf(stderr, "can't listen on socket\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
|
|
||||||
cur_connected = 0;
|
|
||||||
for (i = 0; i < max_connection; i++)
|
|
||||||
netfd[i] = -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* start connection on server
|
|
||||||
*/
|
|
||||||
static void start_connection(void)
|
|
||||||
{
|
|
||||||
struct sockaddr_in addr;
|
|
||||||
int i;
|
|
||||||
int addr_len;
|
|
||||||
|
|
||||||
for (i = 0; i < max_connection; i++) {
|
|
||||||
if (netfd[i] < 0)
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
if (i >= max_connection) {
|
|
||||||
fprintf(stderr, "too many connections!\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
memset(&addr, 0, sizeof(addr));
|
|
||||||
addr_len = sizeof(addr);
|
|
||||||
netfd[i] = accept(sockfd, (struct sockaddr *)&addr, &addr_len);
|
|
||||||
if (netfd[i] < 0) {
|
|
||||||
fprintf(stderr, "can't accept\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
fprintf(stderr, "accepted[%d]\n", netfd[i]);
|
|
||||||
cur_connected++;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* initialize network client
|
|
||||||
*/
|
|
||||||
static void init_client(char *server, int port)
|
|
||||||
{
|
|
||||||
struct sockaddr_in addr;
|
|
||||||
struct hostent *host;
|
|
||||||
int fd;
|
|
||||||
|
|
||||||
if ((fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0){
|
|
||||||
fprintf(stderr, "can't create socket\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
if ((host = gethostbyname(server)) == NULL){
|
|
||||||
fprintf(stderr,"can't get address %s\n", server);
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
addr.sin_port = htons(port);
|
|
||||||
addr.sin_family = AF_INET;
|
|
||||||
memcpy(&addr.sin_addr, host->h_addr, host->h_length);
|
|
||||||
if (connect(fd, &addr, sizeof(addr)) < 0) {
|
|
||||||
fprintf(stderr,"can't connect\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
fprintf(stderr, "ok.. connected\n");
|
|
||||||
netfd[0] = fd;
|
|
||||||
cur_connected = 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* set file descriptor
|
|
||||||
*/
|
|
||||||
static void set_fd(int fd, fd_set *p, int *width)
|
|
||||||
{
|
|
||||||
FD_SET(fd, p);
|
|
||||||
if (fd >= *width)
|
|
||||||
*width = fd + 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* event loop
|
|
||||||
*/
|
|
||||||
static void do_loop(void)
|
|
||||||
{
|
|
||||||
fd_set rfd;
|
|
||||||
int i, rc, width;
|
|
||||||
|
|
||||||
for (;;) {
|
|
||||||
FD_ZERO(&rfd);
|
|
||||||
width = 0;
|
|
||||||
set_fd(seqfd, &rfd, &width);
|
|
||||||
if (server_mode)
|
|
||||||
set_fd(sockfd, &rfd, &width);
|
|
||||||
for (i = 0; i < max_connection; i++) {
|
|
||||||
if (netfd[i] >= 0)
|
|
||||||
set_fd(netfd[i], &rfd, &width);
|
|
||||||
}
|
|
||||||
rc = select(width, &rfd, NULL, NULL, NULL);
|
|
||||||
if (rc <= 0)
|
|
||||||
exit(1);
|
|
||||||
if (server_mode) {
|
|
||||||
if (FD_ISSET(sockfd, &rfd))
|
|
||||||
start_connection();
|
|
||||||
}
|
|
||||||
if (FD_ISSET(seqfd, &rfd)) {
|
|
||||||
if (copy_local_to_remote())
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
for (i = 0; i < max_connection; i++) {
|
|
||||||
if (netfd[i] < 0)
|
|
||||||
continue;
|
|
||||||
if (FD_ISSET(netfd[i], &rfd)) {
|
|
||||||
if (copy_remote_to_local(netfd[i])) {
|
|
||||||
netfd[i] = -1;
|
|
||||||
cur_connected--;
|
|
||||||
if (cur_connected <= 0)
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* flush write buffer - send data to the socket
|
|
||||||
*/
|
|
||||||
static void flush_writebuf(void)
|
|
||||||
{
|
|
||||||
if (cur_wrlen) {
|
|
||||||
int i;
|
|
||||||
for (i = 0; i < max_connection; i++) {
|
|
||||||
if (netfd[i] >= 0)
|
|
||||||
write(netfd[i], writebuf, cur_wrlen);
|
|
||||||
}
|
|
||||||
cur_wrlen = 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* get space from write buffer
|
|
||||||
*/
|
|
||||||
static char *get_writebuf(int len)
|
|
||||||
{
|
|
||||||
char *buf;
|
|
||||||
if (cur_wrlen + len >= max_wrlen)
|
|
||||||
flush_writebuf();
|
|
||||||
buf = writebuf + cur_wrlen;
|
|
||||||
cur_wrlen += len;
|
|
||||||
return buf;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* copy events from sequencer to port(s)
|
|
||||||
*/
|
|
||||||
static int copy_local_to_remote(void)
|
|
||||||
{
|
|
||||||
int rc;
|
|
||||||
snd_seq_event_t *ev;
|
|
||||||
char *buf;
|
|
||||||
|
|
||||||
while ((rc = snd_seq_event_input(handle, &ev)) >= 0 && ev) {
|
|
||||||
if (ev->type >= SND_SEQ_EVENT_CLIENT_START) {
|
|
||||||
snd_seq_free_event(ev);
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
if (snd_seq_ev_is_variable(ev)) {
|
|
||||||
int len;
|
|
||||||
len = sizeof(snd_seq_event_t) + ev->data.ext.len;
|
|
||||||
buf = get_writebuf(len);
|
|
||||||
memcpy(buf, ev, sizeof(snd_seq_event_t));
|
|
||||||
memcpy(buf + sizeof(snd_seq_event_t), ev->data.ext.ptr, ev->data.ext.len);
|
|
||||||
} else {
|
|
||||||
buf = get_writebuf(sizeof(snd_seq_event_t));
|
|
||||||
memcpy(buf, ev, sizeof(snd_seq_event_t));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
flush_writebuf();
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* copy events from a port to sequencer
|
|
||||||
*/
|
|
||||||
static int copy_remote_to_local(int fd)
|
|
||||||
{
|
|
||||||
int count;
|
|
||||||
char *buf;
|
|
||||||
snd_seq_event_t *ev;
|
|
||||||
|
|
||||||
count = read(fd, readbuf, MAX_BUF_EVENTS * sizeof(snd_seq_event_t));
|
|
||||||
buf = readbuf;
|
|
||||||
|
|
||||||
if (count == 0) {
|
|
||||||
fprintf(stderr, "disconnected\n");
|
|
||||||
return 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
while (count > 0) {
|
|
||||||
ev = snd_seq_create_event();
|
|
||||||
if (ev == NULL) {
|
|
||||||
fprintf(stderr, "can't malloc\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
memcpy(ev, buf, sizeof(snd_seq_event_t));
|
|
||||||
buf += sizeof(snd_seq_event_t);
|
|
||||||
count -= sizeof(snd_seq_event_t);
|
|
||||||
if (snd_seq_ev_is_variable(ev) && ev->data.ext.len > 0) {
|
|
||||||
ev->data.ext.ptr = malloc(ev->data.ext.len);
|
|
||||||
if (ev->data.ext.ptr == NULL) {
|
|
||||||
fprintf(stderr, "can't malloc\n");
|
|
||||||
exit(1);
|
|
||||||
}
|
|
||||||
memcpy(ev->data.ext.ptr, buf, ev->data.ext.len);
|
|
||||||
buf += ev->data.ext.len;
|
|
||||||
count -= ev->data.ext.len;
|
|
||||||
}
|
|
||||||
snd_seq_ev_set_direct(ev);
|
|
||||||
snd_seq_ev_set_source(ev, seq_port);
|
|
||||||
snd_seq_ev_set_subs(ev);
|
|
||||||
snd_seq_event_output(handle, ev);
|
|
||||||
snd_seq_free_event(ev);
|
|
||||||
}
|
|
||||||
|
|
||||||
snd_seq_flush_output(handle);
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue