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jackdbus/example-clients/netsource.c

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/*
NetJack Client
Copyright (C) 2008 Marc-Olivier Barre <marco@marcochapeau.org>
Copyright (C) 2008 Pieter Palmers <pieterpalmers@users.sourceforge.net>
Copyright (C) 2006 Torben Hohn <torbenh@gmx.de>
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; either version 2 of the License, or
(at your option) any later version.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file netsource.c
*
* @brief This client connects a remote slave JACK to a local JACK server assumed to be the master
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#ifdef WIN32
#include <winsock2.h>
#define socklen_t int
#include <malloc.h>
#else
#include <netinet/in.h>
#include <netdb.h>
#include <sys/socket.h>
#endif
/* These two required by FreeBSD. */
#include <sys/types.h>
#include <jack/jack.h>
#include <netjack_packet.h>
#if HAVE_SAMPLERATE
#include <samplerate.h>
#endif
#if HAVE_CELT
#include <celt/celt.h>
#endif
#if HAVE_OPUS
#include <opus/opus.h>
#include <opus/opus_custom.h>
#endif
#include <math.h>
JSList *capture_ports = NULL;
JSList *capture_srcs = NULL;
int capture_channels = 0;
int capture_channels_audio = 2;
int capture_channels_midi = 1;
JSList *playback_ports = NULL;
JSList *playback_srcs = NULL;
int playback_channels = 0;
int playback_channels_audio = 2;
int playback_channels_midi = 1;
int dont_htonl_floats = 0;
int latency = 5;
jack_nframes_t factor = 1;
int bitdepth = 0;
int mtu = 1400;
int reply_port = 0;
int bind_port = 0;
int redundancy = 1;
jack_client_t *client;
packet_cache * packcache = 0;
int state_connected = 0;
int state_latency = 0;
int state_netxruns = 0;
int state_currentframe = 0;
int state_recv_packet_queue_time = 0;
int quit = 0;
int outsockfd;
int insockfd;
#ifdef WIN32
struct sockaddr_in destaddr;
struct sockaddr_in bindaddr;
#else
struct sockaddr destaddr;
struct sockaddr bindaddr;
#endif
int sync_state;
jack_transport_state_t last_transport_state;
int framecnt = 0;
int cont_miss = 0;
int freewheeling = 0;
/**
* This Function allocates all the I/O Ports which are added the lists.
*/
void
alloc_ports (int n_capture_audio, int n_playback_audio, int n_capture_midi, int n_playback_midi)
{
int port_flags = JackPortIsOutput;
int chn;
jack_port_t *port;
char buf[32];
capture_ports = NULL;
/* Allocate audio capture channels */
for (chn = 0; chn < n_capture_audio; chn++) {
snprintf (buf, sizeof (buf) - 1, "capture_%u", chn + 1);
port = jack_port_register (client, buf, JACK_DEFAULT_AUDIO_TYPE, port_flags, 0);
if (!port) {
printf( "jack_netsource: cannot register %s port\n", buf);
break;
}
if (bitdepth == 1000) {
#if HAVE_CELT
#if HAVE_CELT_API_0_11
CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate( client ), jack_get_buffer_size(client), NULL );
capture_srcs = jack_slist_append(capture_srcs, celt_decoder_create_custom( celt_mode, 1, NULL ) );
#elif HAVE_CELT_API_0_7 || HAVE_CELT_API_0_8
CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate( client ), jack_get_buffer_size(client), NULL );
capture_srcs = jack_slist_append(capture_srcs, celt_decoder_create( celt_mode, 1, NULL ) );
#else
CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate( client ), 1, jack_get_buffer_size(client), NULL );
capture_srcs = jack_slist_append(capture_srcs, celt_decoder_create( celt_mode ) );
#endif
#endif
} else if (bitdepth == 999) {
#if HAVE_OPUS
int err;
OpusCustomMode *opus_mode = opus_custom_mode_create(jack_get_sample_rate( client ), jack_get_buffer_size(client), &err);
if (err != OPUS_OK) { printf("OPUS MODE FAILED\n"); }
OpusCustomDecoder *decoder = opus_custom_decoder_create(opus_mode, 1, &err);
if (err != OPUS_OK) { printf("OPUS DECODER FAILED\n"); }
opus_custom_decoder_init(decoder, opus_mode, 1);
capture_srcs = jack_slist_append(capture_srcs, decoder);
#endif
} else {
#if HAVE_SAMPLERATE
capture_srcs = jack_slist_append (capture_srcs, src_new (SRC_LINEAR, 1, NULL));
#endif
}
capture_ports = jack_slist_append (capture_ports, port);
}
/* Allocate midi capture channels */
for (chn = n_capture_audio; chn < n_capture_midi + n_capture_audio; chn++) {
snprintf (buf, sizeof (buf) - 1, "capture_%u", chn + 1);
port = jack_port_register (client, buf, JACK_DEFAULT_MIDI_TYPE, port_flags, 0);
if (!port) {
printf ("jack_netsource: cannot register %s port\n", buf);
break;
}
capture_ports = jack_slist_append(capture_ports, port);
}
/* Allocate audio playback channels */
port_flags = JackPortIsInput;
playback_ports = NULL;
for (chn = 0; chn < n_playback_audio; chn++) {
snprintf (buf, sizeof (buf) - 1, "playback_%u", chn + 1);
port = jack_port_register (client, buf, JACK_DEFAULT_AUDIO_TYPE, port_flags, 0);
if (!port) {
printf ("jack_netsource: cannot register %s port\n", buf);
break;
}
if( bitdepth == 1000 ) {
#if HAVE_CELT
#if HAVE_CELT_API_0_11
CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate (client), jack_get_buffer_size(client), NULL );
playback_srcs = jack_slist_append(playback_srcs, celt_encoder_create_custom( celt_mode, 1, NULL ) );
#elif HAVE_CELT_API_0_7 || HAVE_CELT_API_0_8
CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate (client), jack_get_buffer_size(client), NULL );
playback_srcs = jack_slist_append(playback_srcs, celt_encoder_create( celt_mode, 1, NULL ) );
#else
CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate (client), 1, jack_get_buffer_size(client), NULL );
playback_srcs = jack_slist_append(playback_srcs, celt_encoder_create( celt_mode ) );
#endif
#endif
} else if( bitdepth == 999 ) {
#if HAVE_OPUS
const int kbps = factor;
printf("new opus encoder %d kbps\n", kbps);
int err;
OpusCustomMode *opus_mode = opus_custom_mode_create(jack_get_sample_rate (client), jack_get_buffer_size(client), &err ); // XXX free me
if (err != OPUS_OK) { printf("OPUS MODE FAILED\n"); }
OpusCustomEncoder *oe = opus_custom_encoder_create( opus_mode, 1, &err );
if (err != OPUS_OK) { printf("OPUS ENCODER FAILED\n"); }
opus_custom_encoder_ctl(oe, OPUS_SET_BITRATE(kbps*1024)); // bits per second
opus_custom_encoder_ctl(oe, OPUS_SET_COMPLEXITY(10));
opus_custom_encoder_ctl(oe, OPUS_SET_SIGNAL(OPUS_SIGNAL_MUSIC));
opus_custom_encoder_ctl(oe, OPUS_SET_SIGNAL(OPUS_APPLICATION_RESTRICTED_LOWDELAY));
opus_custom_encoder_init(oe, opus_mode, 1);
playback_srcs = jack_slist_append(playback_srcs, oe);
#endif
} else {
#if HAVE_SAMPLERATE
playback_srcs = jack_slist_append (playback_srcs, src_new (SRC_LINEAR, 1, NULL));
#endif
}
playback_ports = jack_slist_append (playback_ports, port);
}
/* Allocate midi playback channels */
for (chn = n_playback_audio; chn < n_playback_midi + n_playback_audio; chn++) {
snprintf (buf, sizeof (buf) - 1, "playback_%u", chn + 1);
port = jack_port_register (client, buf, JACK_DEFAULT_MIDI_TYPE, port_flags, 0);
if (!port) {
printf ("jack_netsource: cannot register %s port\n", buf);
break;
}
playback_ports = jack_slist_append (playback_ports, port);
}
}
/**
* The Sync callback... sync state is set elsewhere...
* we will see if this is working correctly.
* i don't really believe in it yet.
*/
int
sync_cb (jack_transport_state_t state, jack_position_t *pos, void *arg)
{
static int latency_count = 0;
int retval = sync_state;
if (! state_connected) {
return 1;
}
if (latency_count) {
latency_count--;
retval = 0;
}
else if (state == JackTransportStarting && last_transport_state != JackTransportStarting) {
retval = 0;
latency_count = latency - 1;
}
last_transport_state = state;
return retval;
}
void
freewheel_cb (int starting, void *arg)
{
freewheeling = starting;
}
int deadline_goodness = 0;
/**
* The process callback for this JACK application.
* It is called by JACK at the appropriate times.
*/
int
process (jack_nframes_t nframes, void *arg)
{
jack_nframes_t net_period;
int rx_bufsize, tx_bufsize;
jack_default_audio_sample_t *buf;
jack_port_t *port;
JSList *node;
int chn;
int size, i;
const char *porttype;
int input_fd;
jack_position_t local_trans_pos;
uint32_t *packet_buf_tx, *packet_bufX;
uint32_t *rx_packet_ptr;
jack_time_t packet_recv_timestamp;
if( bitdepth == 1000 || bitdepth == 999)
net_period = (factor * jack_get_buffer_size(client) * 1024 / jack_get_sample_rate(client) / 8) & (~1) ;
else
net_period = (float) nframes / (float) factor;
rx_bufsize = get_sample_size (bitdepth) * capture_channels * net_period + sizeof (jacknet_packet_header);
tx_bufsize = get_sample_size (bitdepth) * playback_channels * net_period + sizeof (jacknet_packet_header);
/* Allocate a buffer where both In and Out Buffer will fit */
packet_buf_tx = alloca (tx_bufsize);
jacknet_packet_header *pkthdr_tx = (jacknet_packet_header *) packet_buf_tx;
/*
* for latency==0 we need to send out the packet before we wait on the reply.
* but this introduces a cycle of latency, when netsource is connected to itself.
* so we send out before read only in zero latency mode.
*
*/
if( latency == 0 ) {
/* reset packet_bufX... */
packet_bufX = packet_buf_tx + sizeof (jacknet_packet_header) / sizeof (jack_default_audio_sample_t);
/* ---------- Send ---------- */
render_jack_ports_to_payload (bitdepth, playback_ports, playback_srcs, nframes,
packet_bufX, net_period, dont_htonl_floats);
/* fill in packet hdr */
pkthdr_tx->transport_state = jack_transport_query (client, &local_trans_pos);
pkthdr_tx->transport_frame = local_trans_pos.frame;
pkthdr_tx->framecnt = framecnt;
pkthdr_tx->latency = latency;
pkthdr_tx->reply_port = reply_port;
pkthdr_tx->sample_rate = jack_get_sample_rate (client);
pkthdr_tx->period_size = nframes;
/* playback for us is capture on the other side */
pkthdr_tx->capture_channels_audio = playback_channels_audio;
pkthdr_tx->playback_channels_audio = capture_channels_audio;
pkthdr_tx->capture_channels_midi = playback_channels_midi;
pkthdr_tx->playback_channels_midi = capture_channels_midi;
pkthdr_tx->mtu = mtu;
if( freewheeling != 0 )
pkthdr_tx->sync_state = (jack_nframes_t)MASTER_FREEWHEELS;
else
pkthdr_tx->sync_state = (jack_nframes_t)deadline_goodness;
//printf("goodness=%d\n", deadline_goodness );
packet_header_hton (pkthdr_tx);
if (cont_miss < 3 * latency + 5) {
int r;
for( r = 0; r < redundancy; r++ )
netjack_sendto (outsockfd, (char *) packet_buf_tx, tx_bufsize, 0, &destaddr, sizeof (destaddr), mtu);
} else if (cont_miss > 50 + 5 * latency) {
state_connected = 0;
packet_cache_reset_master_address( packcache );
//printf ("Frame %d \tRealy too many packets missed (%d). Let's reset the counter\n", framecnt, cont_miss);
cont_miss = 0;
}
}
/*
* ok... now the RECEIVE code.
*
*/
if( reply_port )
input_fd = insockfd;
else
input_fd = outsockfd;
// for latency == 0 we can poll.
if( (latency == 0) || (freewheeling != 0) ) {
jack_time_t deadline = jack_get_time() + 1000000 * jack_get_buffer_size(client) / jack_get_sample_rate(client);
// Now loop until we get the right packet.
while(1) {
jack_nframes_t got_frame;
if ( ! netjack_poll_deadline( input_fd, deadline ) )
break;
packet_cache_drain_socket(packcache, input_fd);
if (packet_cache_get_next_available_framecnt( packcache, framecnt - latency, &got_frame ))
if( got_frame == (framecnt - latency) )
break;
}
} else {
// normally:
// only drain socket.
packet_cache_drain_socket(packcache, input_fd);
}
size = packet_cache_retreive_packet_pointer( packcache, framecnt - latency, (char**)&rx_packet_ptr, rx_bufsize, &packet_recv_timestamp );
/* First alternative : we received what we expected. Render the data
* to the JACK ports so it can be played. */
if (size == rx_bufsize) {
uint32_t *packet_buf_rx = rx_packet_ptr;
jacknet_packet_header *pkthdr_rx = (jacknet_packet_header *) packet_buf_rx;
packet_bufX = packet_buf_rx + sizeof (jacknet_packet_header) / sizeof (jack_default_audio_sample_t);
// calculate how much time there would have been, if this packet was sent at the deadline.
int recv_time_offset = (int) (jack_get_time() - packet_recv_timestamp);
packet_header_ntoh (pkthdr_rx);
deadline_goodness = recv_time_offset - (int)pkthdr_rx->latency;
//printf( "deadline goodness = %d ---> off: %d\n", deadline_goodness, recv_time_offset );
if (cont_miss) {
//printf("Frame %d \tRecovered from dropouts\n", framecnt);
cont_miss = 0;
}
render_payload_to_jack_ports (bitdepth, packet_bufX, net_period,
capture_ports, capture_srcs, nframes, dont_htonl_floats);
state_currentframe = framecnt;
state_recv_packet_queue_time = recv_time_offset;
state_connected = 1;
sync_state = pkthdr_rx->sync_state;
packet_cache_release_packet( packcache, framecnt - latency );
}
/* Second alternative : we've received something that's not
* as big as expected or we missed a packet. We render silence
* to the ouput ports */
else {
jack_nframes_t latency_estimate;
if( packet_cache_find_latency( packcache, framecnt, &latency_estimate ) )
//if( (state_latency == 0) || (latency_estimate < state_latency) )
state_latency = latency_estimate;
// Set the counters up.
state_currentframe = framecnt;
//state_latency = framecnt - pkthdr->framecnt;
state_netxruns += 1;
//printf ("Frame %d \tPacket missed or incomplete (expected: %d bytes, got: %d bytes)\n", framecnt, rx_bufsize, size);
//printf ("Frame %d \tPacket missed or incomplete\n", framecnt);
cont_miss += 1;
chn = 0;
node = capture_ports;
while (node != NULL) {
port = (jack_port_t *) node->data;
buf = jack_port_get_buffer (port, nframes);
porttype = jack_port_type (port);
if (strncmp (porttype, JACK_DEFAULT_AUDIO_TYPE, jack_port_type_size ()) == 0)
for (i = 0; i < nframes; i++)
buf[i] = 0.0;
else if (strncmp (porttype, JACK_DEFAULT_MIDI_TYPE, jack_port_type_size ()) == 0)
jack_midi_clear_buffer (buf);
node = jack_slist_next (node);
chn++;
}
}
if (latency != 0) {
/* reset packet_bufX... */
packet_bufX = packet_buf_tx + sizeof (jacknet_packet_header) / sizeof (jack_default_audio_sample_t);
/* ---------- Send ---------- */
render_jack_ports_to_payload (bitdepth, playback_ports, playback_srcs, nframes,
packet_bufX, net_period, dont_htonl_floats);
/* fill in packet hdr */
pkthdr_tx->transport_state = jack_transport_query (client, &local_trans_pos);
pkthdr_tx->transport_frame = local_trans_pos.frame;
pkthdr_tx->framecnt = framecnt;
pkthdr_tx->latency = latency;
pkthdr_tx->reply_port = reply_port;
pkthdr_tx->sample_rate = jack_get_sample_rate (client);
pkthdr_tx->period_size = nframes;
/* playback for us is capture on the other side */
pkthdr_tx->capture_channels_audio = playback_channels_audio;
pkthdr_tx->playback_channels_audio = capture_channels_audio;
pkthdr_tx->capture_channels_midi = playback_channels_midi;
pkthdr_tx->playback_channels_midi = capture_channels_midi;
pkthdr_tx->mtu = mtu;
if( freewheeling != 0 )
pkthdr_tx->sync_state = (jack_nframes_t)MASTER_FREEWHEELS;
else
pkthdr_tx->sync_state = (jack_nframes_t)deadline_goodness;
//printf("goodness=%d\n", deadline_goodness );
packet_header_hton (pkthdr_tx);
if (cont_miss < 3 * latency + 5) {
int r;
for( r = 0; r < redundancy; r++ )
netjack_sendto (outsockfd, (char *) packet_buf_tx, tx_bufsize, 0, &destaddr, sizeof (destaddr), mtu);
} else if (cont_miss > 50 + 5 * latency) {
state_connected = 0;
packet_cache_reset_master_address( packcache );
//printf ("Frame %d \tRealy too many packets missed (%d). Let's reset the counter\n", framecnt, cont_miss);
cont_miss = 0;
}
}
framecnt++;
return 0;
}
/**
* This is the shutdown callback for this JACK application.
* It is called by JACK if the server ever shuts down or
* decides to disconnect the client.
*/
void
jack_shutdown (void *arg)
{
fprintf(stderr, "JACK shut down, exiting ...\n");
exit (1);
}
void
init_sockaddr_in (struct sockaddr_in *name , const char *hostname , uint16_t port)
{
name->sin_family = AF_INET ;
name->sin_port = htons (port);
if (hostname) {
struct hostent *hostinfo = gethostbyname (hostname);
if (hostinfo == NULL) {
fprintf (stderr, "init_sockaddr_in: unknown host: %s.\n", hostname);
fflush( stderr );
}
#ifdef WIN32
name->sin_addr.s_addr = inet_addr( hostname );
#else
name->sin_addr = *(struct in_addr *) hostinfo->h_addr ;
#endif
} else
name->sin_addr.s_addr = htonl (INADDR_ANY) ;
}
void
printUsage ()
{
fprintf (stderr, "usage: jack_netsource [options]\n"
"\n"
" -h this help text\n"
" -H <slave host> - Host name of the slave JACK\n"
" -o <num channels> - Number of audio playback channels\n"
" -i <num channels> - Number of audio capture channels\n"
" -O <num channels> - Number of midi playback channels\n"
" -I <num channels> - Number of midi capture channels\n"
" -n <periods> - Network latency in JACK periods\n"
" -p <port> - UDP port that the slave is listening on\n"
" -r <reply port> - UDP port that we are listening on\n"
" -B <bind port> - reply port, for use in NAT environments\n"
" -b <bitdepth> - Set transport to use 16bit or 8bit\n"
" -c <kbits> - Use CELT encoding with <kbits> kbits per channel\n"
" -P <kbits> - Use Opus encoding with <kbits> kbits per channel\n"
" -m <mtu> - Assume this mtu for the link\n"
" -R <N> - Redundancy: send out packets N times.\n"
" -e - skip host-to-network endianness conversion\n"
" -N <jack name> - Reports a different name to jack\n"
" -s <server name> - The name of the local jack server\n"
"\n");
}
void
sigterm_handler( int signal )
{
quit = 1;
}
int
main (int argc, char *argv[])
{
/* Some startup related basics */
char *client_name, *server_name = NULL, *peer_ip;
int peer_port = 3000;
jack_options_t options = JackNullOption;
jack_status_t status;
#ifdef WIN32
WSADATA wsa;
int rc = WSAStartup(MAKEWORD(2, 0), &wsa);
#endif
/* Torben's famous state variables, aka "the reporting API" ! */
/* heh ? these are only the copies of them ;) */
int statecopy_connected, statecopy_latency, statecopy_netxruns;
jack_nframes_t net_period;
/* Argument parsing stuff */
extern char *optarg;
extern int optind, optopt;
int errflg = 0, c;
if (argc < 3) {
printUsage ();
return 1;
}
client_name = (char *) malloc (sizeof (char) * 10);
peer_ip = (char *) malloc (sizeof (char) * 10);
sprintf(client_name, "netjack");
sprintf(peer_ip, "localhost");
while ((c = getopt (argc, argv, ":h:H:o:i:O:I:n:p:r:B:b:c:m:R:e:N:s:P:")) != -1) {
switch (c) {
case 'h':
printUsage();
exit (0);
break;
case 'H':
free(peer_ip);
peer_ip = (char *) malloc (sizeof (char) * strlen (optarg) + 1);
strcpy (peer_ip, optarg);
break;
case 'o':
playback_channels_audio = atoi (optarg);
break;
case 'i':
capture_channels_audio = atoi (optarg);
break;
case 'O':
playback_channels_midi = atoi (optarg);
break;
case 'I':
capture_channels_midi = atoi (optarg);
break;
case 'n':
latency = atoi (optarg);
break;
case 'p':
peer_port = atoi (optarg);
break;
case 'r':
reply_port = atoi (optarg);
break;
case 'B':
bind_port = atoi (optarg);
break;
case 'f':
factor = atoi (optarg);
printf("This feature is deprecated and will be removed in future netjack versions. CELT offers a superiour way to conserve bandwidth");
break;
case 'b':
bitdepth = atoi (optarg);
break;
case 'c':
#if HAVE_CELT
bitdepth = 1000;
factor = atoi (optarg);
#else
printf( "not built with celt support\n" );
exit(10);
#endif
break;
case 'P':
#if HAVE_OPUS
bitdepth = 999;
factor = atoi (optarg);
#else
printf( "not built with opus support\n" );
exit(10);
#endif
break;
case 'm':
mtu = atoi (optarg);
break;
case 'R':
redundancy = atoi (optarg);
break;
case 'e':
dont_htonl_floats = 1;
break;
case 'N':
free(client_name);
client_name = (char *) malloc (sizeof (char) * strlen (optarg) + 1);
strcpy (client_name, optarg);
break;
case 's':
server_name = (char *) malloc (sizeof (char) * strlen (optarg) + 1);
strcpy (server_name, optarg);
options |= JackServerName;
break;
case ':':
fprintf (stderr, "Option -%c requires an operand\n", optopt);
errflg++;
break;
case '?':
fprintf (stderr, "Unrecognized option: -%c\n", optopt);
errflg++;
}
}
if (errflg) {
printUsage ();
exit (2);
}
capture_channels = capture_channels_audio + capture_channels_midi;
playback_channels = playback_channels_audio + playback_channels_midi;
outsockfd = socket (AF_INET, SOCK_DGRAM, 0);
insockfd = socket (AF_INET, SOCK_DGRAM, 0);
if ((outsockfd == -1) || (insockfd == -1)) {
fprintf (stderr, "cant open sockets\n" );
return 1;
}
init_sockaddr_in ((struct sockaddr_in *) &destaddr, peer_ip, peer_port);
if (bind_port) {
init_sockaddr_in ((struct sockaddr_in *) &bindaddr, NULL, bind_port);
if( bind (outsockfd, &bindaddr, sizeof (bindaddr)) ) {
fprintf (stderr, "bind failure\n" );
}
}
if (reply_port) {
init_sockaddr_in ((struct sockaddr_in *) &bindaddr, NULL, reply_port);
if( bind (insockfd, &bindaddr, sizeof (bindaddr)) ) {
fprintf (stderr, "bind failure\n" );
}
}
/* try to become a client of the JACK server */
client = jack_client_open (client_name, options, &status, server_name);
if (client == NULL) {
fprintf (stderr, "jack_client_open() failed, status = 0x%2.0x\n"
"Is the JACK server running ?\n", status);
return 1;
}
/* Set up jack callbacks */
jack_set_process_callback (client, process, 0);
jack_set_sync_callback (client, sync_cb, 0);
jack_set_freewheel_callback (client, freewheel_cb, 0);
jack_on_shutdown (client, jack_shutdown, 0);
alloc_ports (capture_channels_audio, playback_channels_audio, capture_channels_midi, playback_channels_midi);
if( bitdepth == 1000 || bitdepth == 999)
net_period = (factor * jack_get_buffer_size(client) * 1024 / jack_get_sample_rate(client) / 8) & (~1) ;
else
net_period = ceilf((float) jack_get_buffer_size (client) / (float) factor);
int rx_bufsize = get_sample_size (bitdepth) * capture_channels * net_period + sizeof (jacknet_packet_header);
packcache = packet_cache_new (latency + 50, rx_bufsize, mtu);
/* tell the JACK server that we are ready to roll */
if (jack_activate (client)) {
fprintf (stderr, "Cannot activate client");
return 1;
}
/* Now sleep forever... and evaluate the state_ vars */
signal( SIGTERM, sigterm_handler );
signal( SIGINT, sigterm_handler );
statecopy_connected = 2; // make it report unconnected on start.
statecopy_latency = state_latency;
statecopy_netxruns = state_netxruns;
while ( !quit ) {
#ifdef WIN32
Sleep (1000);
#else
sleep(1);
#endif
if (statecopy_connected != state_connected) {
statecopy_connected = state_connected;
if (statecopy_connected) {
state_netxruns = 1; // We want to reset the netxrun count on each new connection
printf ("Connected :-)\n");
} else
printf ("Not Connected\n");
fflush(stdout);
}
if (statecopy_connected) {
if (statecopy_netxruns != state_netxruns) {
statecopy_netxruns = state_netxruns;
printf ("%s: at frame %06d -> total netxruns %d (%d%%) queue time= %d\n",
client_name,
state_currentframe,
statecopy_netxruns,
100 * statecopy_netxruns / state_currentframe,
state_recv_packet_queue_time);
fflush(stdout);
}
} else {
if (statecopy_latency != state_latency) {
statecopy_latency = state_latency;
if (statecopy_latency > 1)
printf ("current latency %d\n", statecopy_latency);
fflush(stdout);
}
}
}
jack_client_close (client);
packet_cache_free (packcache);
exit (0);
}
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