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/*
* ALSA SEQ < - > JACK MIDI bridge
*
* Copyright (c) 2006,2007 Dmitry S. Baikov <c0ff@konstruktiv.org>
* Copyright (c) 2007,2008,2009 Nedko Arnaudov <nedko@arnaudov.name>
* Copyright (c) 2009,2010 Paul Davis <paul@linuxaudiosystems.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdbool.h>
#include <ctype.h>
#include <semaphore.h>
#include <alsa/asoundlib.h>
#include <jack/jack.h>
#include <jack/ringbuffer.h>
#include "list.h"
#include "a2j.h"
#include "port_hash.h"
#include "port.h"
/* This should be part of JACK API */
#define JACK_IS_VALID_PORT_NAME_CHAR(c) \
(isalnum (c) || \
(c) == '/' || \
(c) == '_' || \
(c) == '(' || \
(c) == ')' || \
(c) == '-' || \
(c) == '[' || \
(c) == ']')
static
int
a2j_alsa_connect_from (alsa_midi_driver_t * driver, int client, int port)
{
snd_seq_port_subscribe_t* sub;
snd_seq_addr_t seq_addr;
int err;
snd_seq_port_subscribe_alloca (&sub);
seq_addr.client = client;
seq_addr.port = port;
snd_seq_port_subscribe_set_sender (sub, &seq_addr);
seq_addr.client = driver->client_id;
seq_addr.port = driver->port_id;
snd_seq_port_subscribe_set_dest (sub, &seq_addr);
snd_seq_port_subscribe_set_time_update (sub, 1);
snd_seq_port_subscribe_set_queue (sub, driver->queue);
snd_seq_port_subscribe_set_time_real (sub, 1);
if ((err = snd_seq_subscribe_port (driver->seq, sub))) {
a2j_error ("can't subscribe to %d:%d - %s", client, port, snd_strerror (err));
}
return err;
}
void
a2j_port_setdead (a2j_port_hash_t hash, snd_seq_addr_t addr)
{
struct a2j_port *port = a2j_port_get (hash, addr);
if (port) {
port->is_dead = true; // see jack_process_internal
} else {
a2j_debug ("port_setdead: not found (%d:%d)", addr.client, addr.port);
}
}
void
a2j_port_free (struct a2j_port * port)
{
// snd_seq_disconnect_from (driver->seq, driver->port_id, port->remote.client, port->remote.port);
// snd_seq_disconnect_to (driver->seq, driver->port_id, port->remote.client, port->remote.port);
if (port->inbound_events) {
jack_ringbuffer_free (port->inbound_events);
}
if (port->jack_port != JACK_INVALID_PORT && !port->driver_ptr->finishing) {
jack_port_unregister (port->driver_ptr->jack_client, port->jack_port);
}
free (port);
}
void
a2j_port_fill_name (struct a2j_port * port_ptr, int dir, snd_seq_client_info_t * client_info_ptr,
const snd_seq_port_info_t * port_info_ptr, bool make_unique)
{
char *c;
const char* const client_name = snd_seq_client_info_get_name (client_info_ptr);
const char* const port_name = snd_seq_port_info_get_name (port_info_ptr);
if (make_unique) {
if (strstr (port_name, client_name) == port_name) {
/* entire client name is part of the port name so don't replicate it */
snprintf (port_ptr->name,
sizeof(port_ptr->name),
"[%d:%d] %s (%s)",
snd_seq_client_info_get_client (client_info_ptr),
snd_seq_port_info_get_port (port_info_ptr),
port_name,
(dir == A2J_PORT_CAPTURE ? "out" : "in"));
} else {
snprintf (port_ptr->name,
sizeof(port_ptr->name),
"[%d:%d] %s %s (%s)",
snd_seq_client_info_get_client (client_info_ptr),
snd_seq_port_info_get_port (port_info_ptr),
client_name,
port_name,
(dir == A2J_PORT_CAPTURE ? "out" : "in"));
}
} else {
if (strstr (port_name, client_name) == port_name) {
/* entire client name is part of the port name so don't replicate it */
snprintf (port_ptr->name,
sizeof(port_ptr->name),
"%s (%s)",
port_name,
(dir == A2J_PORT_CAPTURE ? "out" : "in"));
} else {
snprintf (port_ptr->name,
sizeof(port_ptr->name),
"%s %s (%s)",
client_name,
snd_seq_port_info_get_name (port_info_ptr),
(dir == A2J_PORT_CAPTURE ? "out" : "in"));
}
}
// replace all offending characters with ' '
for (c = port_ptr->name; *c; ++c) {
if (!JACK_IS_VALID_PORT_NAME_CHAR (*c)) {
*c = ' ';
}
}
}
struct a2j_port *
a2j_port_create (alsa_midi_driver_t * driver, int dir, snd_seq_addr_t addr, const snd_seq_port_info_t * info)
{
struct a2j_port *port;
int err;
int client;
snd_seq_client_info_t * client_info_ptr;
int jack_caps;
struct a2j_stream * stream_ptr;
stream_ptr = &driver->stream[dir];
if ((err = snd_seq_client_info_malloc (&client_info_ptr)) != 0) {
a2j_error ("Failed to allocate client info");
goto fail;
}
client = snd_seq_port_info_get_client (info);
err = snd_seq_get_any_client_info (driver->seq, client, client_info_ptr);
if (err != 0) {
a2j_error ("Failed to get client info");
goto fail_free_client_info;
}
a2j_debug ("client name: '%s'", snd_seq_client_info_get_name (client_info_ptr));
a2j_debug ("port name: '%s'", snd_seq_port_info_get_name (info));
port = calloc (1, sizeof(struct a2j_port));
if (!port) {
goto fail_free_client_info;
}
port->driver_ptr = driver;
port->jack_port = JACK_INVALID_PORT;
port->remote = addr;
a2j_port_fill_name (port, dir, client_info_ptr, info, false);
/* Add port to list early, before registering to JACK, so map functionality is guaranteed to work during port registration */
list_add_tail (&port->siblings, &stream_ptr->list);
if (dir == A2J_PORT_CAPTURE) {
jack_caps = JackPortIsOutput;
} else {
jack_caps = JackPortIsInput;
}
/* mark anything that looks like a hardware port as physical&terminal */
if (snd_seq_port_info_get_type (info) & (SND_SEQ_PORT_TYPE_HARDWARE | SND_SEQ_PORT_TYPE_PORT | SND_SEQ_PORT_TYPE_SPECIFIC)) {
jack_caps |= JackPortIsPhysical | JackPortIsTerminal;
}
port->jack_port = jack_port_register (driver->jack_client, port->name, JACK_DEFAULT_MIDI_TYPE, jack_caps, 0);
if (port->jack_port == JACK_INVALID_PORT) {
a2j_error ("jack_port_register() failed for '%s'", port->name);
goto fail_free_port;
}
if (dir == A2J_PORT_CAPTURE) {
err = a2j_alsa_connect_from (driver, port->remote.client, port->remote.port);
} else {
err = snd_seq_connect_to (driver->seq, driver->port_id, port->remote.client, port->remote.port);
}
if (err) {
a2j_debug ("port skipped: %s", port->name);
goto fail_free_port;
}
port->inbound_events = jack_ringbuffer_create (MAX_EVENT_SIZE * 16);
a2j_debug ("port created: %s", port->name);
return port;
fail_free_port:
list_del (&port->siblings);
a2j_port_free (port);
fail_free_client_info:
snd_seq_client_info_free (client_info_ptr);
fail:
return NULL;
}
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