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/* ----------------------- Experimental routines for jack -------------- */
#ifdef USEAPI_JACK
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "m_pd.h"
#include "s_stuff.h"
#include <jack/jack.h>
#include <regex.h>
#include <pthread.h>
#define MAX_CLIENTS 100
#define MAX_JACK_PORTS 128 /* seems like higher values give bad xrun problems */
#define BUF_JACK 4096
static jack_nframes_t jack_out_max;
#define JACK_OUT_MAX 64
static jack_nframes_t jack_filled = 0;
static t_sample *jack_outbuf;
static t_sample *jack_inbuf;
static int jack_started = 0;
static jack_port_t *input_port[MAX_JACK_PORTS];
static jack_port_t *output_port[MAX_JACK_PORTS];
static int outport_count = 0;
static jack_client_t *jack_client = NULL;
char *jack_client_names[MAX_CLIENTS];
static int jack_dio_error;
static t_audiocallback jack_callback;
pthread_mutex_t jack_mutex;
pthread_cond_t jack_sem;
static int
process (jack_nframes_t nframes, void *arg)
{
int j;
jack_default_audio_sample_t *out, *in;
pthread_mutex_lock(&jack_mutex);
if (nframes > JACK_OUT_MAX) jack_out_max = nframes;
else jack_out_max = JACK_OUT_MAX;
if (jack_filled >= nframes)
{
if (jack_filled != nframes)
fprintf(stderr,"Partial read\n");
/* hmm, how to find out whether 't_sample' and
'jack_default_audio_sample_t' are actually the same type??? */
if (sizeof(t_sample)==sizeof(jack_default_audio_sample_t))
{
for (j = 0; j < sys_outchannels; j++)
{
out = jack_port_get_buffer (output_port[j], nframes);
memcpy(out, jack_outbuf + (j * BUF_JACK),
sizeof (jack_default_audio_sample_t) * nframes);
}
for (j = 0; j < sys_inchannels; j++)
{
in = jack_port_get_buffer( input_port[j], nframes);
memcpy(jack_inbuf + (j * BUF_JACK), in,
sizeof (jack_default_audio_sample_t) * nframes);
}
}
else
{
unsigned int frame=0;
t_sample*data;
for (j = 0; j < sys_outchannels; j++)
{
out = jack_port_get_buffer (output_port[j], nframes);
data = jack_outbuf + (j * BUF_JACK);
for(frame=0; frame<nframes; frame++)
{
*out++=*data++;
}
}
for (j = 0; j < sys_inchannels; j++)
{
in = jack_port_get_buffer( input_port[j], nframes);
data = jack_inbuf + (j * BUF_JACK);
for(frame=0; frame<nframes; frame++)
{
*data++=*in++;
}
}
}
jack_filled -= nframes;
}
else
{ /* PD could not keep up ! */
if (jack_started) jack_dio_error = 1;
for (j = 0; j < outport_count; j++)
{
out = jack_port_get_buffer (output_port[j], nframes);
memset(out, 0, sizeof (float) * nframes);
memset(jack_outbuf + j * BUF_JACK, 0, BUF_JACK * sizeof(t_sample));
}
jack_filled = 0;
}
pthread_cond_broadcast(&jack_sem);
pthread_mutex_unlock(&jack_mutex);
return 0;
}
static int callbackprocess(jack_nframes_t nframes, void *arg)
{
int chan, j, k;
unsigned int n;
jack_default_audio_sample_t *out[MAX_JACK_PORTS], *in[MAX_JACK_PORTS], *jp;
if (nframes % DEFDACBLKSIZE)
{
fprintf(stderr, "jack: nframes %d not a multiple of blocksize %d\n",
nframes, DEFDACBLKSIZE);
nframes -= (nframes % DEFDACBLKSIZE);
}
for (chan = 0; chan < sys_inchannels; chan++)
in[chan] = jack_port_get_buffer(input_port[chan], nframes);
for (chan = 0; chan < sys_outchannels; chan++)
out[chan] = jack_port_get_buffer(output_port[chan], nframes);
for (n = 0; n < nframes; n += DEFDACBLKSIZE)
{
t_sample *fp;
for (chan = 0; chan < sys_inchannels; chan++)
{
for (fp = sys_soundin + chan*DEFDACBLKSIZE,
jp = in[chan] + n, j=0; j < DEFDACBLKSIZE; j++)
*fp++ = *jp++;
}
for (chan = 0; chan < sys_outchannels; chan++)
{
for (fp = sys_soundout + chan*DEFDACBLKSIZE,
j = 0; j < DEFDACBLKSIZE; j++)
*fp++ = 0;
}
(*jack_callback)();
for (chan = 0; chan < sys_outchannels; chan++)
{
for (fp = sys_soundout + chan*DEFDACBLKSIZE, jp = out[chan] + n,
j=0; j < DEFDACBLKSIZE; j++)
*jp++ = *fp++;
}
}
return 0;
}
static int
jack_srate (jack_nframes_t srate, void *arg)
{
sys_dacsr = srate;
return 0;
}
void glob_audio_setapi(void *dummy, t_floatarg f);
static void
jack_shutdown (void *arg)
{
error("JACK: server shut down");
jack_deactivate (jack_client);
//jack_client_close(jack_client); /* likely to hang if the server shut down */
jack_client = NULL;
glob_audio_setapi(NULL, API_NONE); // set pd_whichapi 0
}
static int jack_xrun(void* arg) {
jack_dio_error = 1;
return 0;
}
static char** jack_get_clients(void)
{
const char **jack_ports;
int i,j;
int num_clients = 0;
regex_t port_regex;
jack_ports = jack_get_ports( jack_client, "", "", 0 );
regcomp( &port_regex, "^[^:]*", REG_EXTENDED );
jack_client_names[0] = NULL;
/* Build a list of clients from the list of ports */
for( i = 0; jack_ports[i] != NULL; i++ )
{
int client_seen;
regmatch_t match_info;
char tmp_client_name[100];
if(num_clients>=MAX_CLIENTS)break;
/* extract the client name from the port name, using a regex
* that parses the clientname:portname syntax */
regexec( &port_regex, jack_ports[i], 1, &match_info, 0 );
memcpy( tmp_client_name, &jack_ports[i][match_info.rm_so],
match_info.rm_eo - match_info.rm_so );
tmp_client_name[ match_info.rm_eo - match_info.rm_so ] = '\0';
/* do we know about this port's client yet? */
client_seen = 0;
for( j = 0; j < num_clients; j++ )
if( strcmp( tmp_client_name, jack_client_names[j] ) == 0 )
client_seen = 1;
if( client_seen == 0 )
{
jack_client_names[num_clients] = (char*)getbytes(strlen(tmp_client_name) + 1);
/* The alsa_pcm client should go in spot 0. If this
* is the alsa_pcm client AND we are NOT about to put
* it in spot 0 put it in spot 0 and move whatever
* was already in spot 0 to the end. */
if( strcmp( "alsa_pcm", tmp_client_name ) == 0 && num_clients > 0 )
{
char* tmp;
/* alsa_pcm goes in spot 0 */
tmp = jack_client_names[ num_clients ];
jack_client_names[ num_clients ] = jack_client_names[0];
jack_client_names[0] = tmp;
strcpy( jack_client_names[0], tmp_client_name);
}
else
{
/* put the new client at the end of the client list */
strcpy( jack_client_names[ num_clients ], tmp_client_name );
}
num_clients++;
}
}
/* for (i=0;i<num_clients;i++) post("client: %s",jack_client_names[i]); */
free( jack_ports );
return jack_client_names;
}
/*
* Wire up all the ports of one client.
*
*/
static int jack_connect_ports(char* client)
{
char regex_pattern[100]; /* its always the same, ... */
int i;
const char **jack_ports;
if (strlen(client) > 96) return -1;
sprintf( regex_pattern, "%s:.*", client );
jack_ports = jack_get_ports( jack_client, regex_pattern,
NULL, JackPortIsOutput);
if (jack_ports)
for (i=0;jack_ports[i] != NULL && i < sys_inchannels;i++)
if (jack_connect (jack_client, jack_ports[i], jack_port_name (input_port[i])))
error ("JACK: cannot connect input ports %s -> %s", jack_ports[i],jack_port_name (input_port[i]));
jack_ports = jack_get_ports( jack_client, regex_pattern,
NULL, JackPortIsInput);
if (jack_ports)
for (i=0;jack_ports[i] != NULL && i < sys_outchannels;i++)
if (jack_connect (jack_client, jack_port_name (output_port[i]), jack_ports[i]))
error( "JACK: cannot connect output ports %s -> %s", jack_port_name (output_port[i]),jack_ports[i]);
free(jack_ports);
return 0;
}
static void pd_jack_error_callback(const char *desc) {
error("JACKerror: %s", desc);
return;
}
int
jack_open_audio(int inchans, int outchans, int rate, t_audiocallback callback)
{
int j;
char port_name[80] = "";
char client_name[80] = "";
int client_iterator = 0;
int new_jack = 0;
int srate;
jack_status_t status;
if (NULL==jack_client_open)
{
fprintf(stderr,"JACK framework not available\n");
error("JACK framework not available");
return 1;
}
jack_dio_error = 0;
if ((inchans == 0) && (outchans == 0)) return 0;
if (outchans > MAX_JACK_PORTS) {
error("JACK: %d output ports not supported, setting to %d",
outchans, MAX_JACK_PORTS);
outchans = MAX_JACK_PORTS;
}
if (inchans > MAX_JACK_PORTS) {
error("JACK: %d input ports not supported, setting to %d",
inchans, MAX_JACK_PORTS);
inchans = MAX_JACK_PORTS;
}
/* try to become a client of the JACK server */
/* if no JACK server exists, start a default one (jack_client_open() does that for us... */
if (!jack_client) {
do {
sprintf(client_name,"pd_extended_%d",client_iterator);
client_iterator++;
jack_client = jack_client_open (client_name, JackNullOption, &status, NULL);
if (status & JackServerFailed) {
error("JACK: unable to connect to JACK server");
jack_client=NULL;
break;
}
} while (status & JackNameNotUnique);
if(status) {
if (status & JackServerStarted) {
verbose(1, "JACK: started server");
} else {
error("JACK: server returned status %d", status);
}
}
verbose(1, "JACK: started server as '%s'", client_name);
if (!jack_client) {
/* jack spits out enough messages already, do not warn */
sys_inchannels = sys_outchannels = 0;
return 1;
}
sys_inchannels = inchans;
sys_outchannels = outchans;
if (jack_inbuf)
free(jack_inbuf);
if (sys_inchannels)
jack_inbuf = calloc(sizeof(t_sample), sys_inchannels * BUF_JACK);
if (jack_outbuf)
free(jack_outbuf);
if (sys_outchannels)
jack_outbuf = calloc(sizeof(t_sample), sys_outchannels * BUF_JACK);
jack_get_clients();
/* tell the JACK server to call `process()' whenever
there is work to be done.
*/
jack_callback = callback;
jack_set_process_callback (jack_client,
(callback? callbackprocess : process), 0);
jack_set_error_function (pd_jack_error_callback);
#ifdef JACK_XRUN
jack_set_xrun_callback (jack_client, jack_xrun, NULL);
#endif
/* tell the JACK server to call `srate()' whenever
the sample rate of the system changes.
*/
jack_set_sample_rate_callback (jack_client, jack_srate, 0);
/* tell the JACK server to call `jack_shutdown()' if
it ever shuts down, either entirely, or if it
just decides to stop calling us.
*/
jack_on_shutdown (jack_client, jack_shutdown, 0);
for (j=0; j<sys_inchannels; j++)
input_port[j]=NULL;
for (j=0; j<sys_outchannels; j++)
output_port[j] = NULL;
new_jack = 1;
}
/* display the current sample rate. once the client is activated
(see below), you should rely on your own sample rate
callback (see above) for this value.
*/
srate = jack_get_sample_rate (jack_client);
sys_dacsr = srate;
/* create the ports */
for (j = 0; j < inchans; j++) {
sprintf(port_name, "input%d", j);
if (!input_port[j]) input_port[j] = jack_port_register (jack_client, port_name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
if (!input_port[j]) {
error("JACK: can only register %d input ports (instead of requested %d)", j, inchans);
sys_inchannels = inchans = j;
break;
}
}
for (j = 0; j < outchans; j++) {
sprintf(port_name, "output%d", j);
if (!output_port[j]) output_port[j] = jack_port_register (jack_client, port_name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
if (!output_port[j]) {
error("JACK: can only register %d output ports (instead of requested %d)", j, outchans);
sys_outchannels = outchans = j;
break;
}
}
outport_count = outchans;
/* tell the JACK server that we are ready to roll */
if (new_jack) {
if (jack_activate (jack_client)) {
error("cannot activate client");
sys_inchannels = sys_outchannels = 0;
return 1;
}
for (j = 0; j < outchans; j++)
memset(jack_outbuf + j * BUF_JACK, 0,
BUF_JACK * sizeof(t_sample));
if (jack_client_names[0])
jack_connect_ports(jack_client_names[0]);
pthread_mutex_init(&jack_mutex, NULL);
pthread_cond_init(&jack_sem, NULL);
}
return 0;
}
void jack_close_audio(void)
{
if (jack_client){
jack_deactivate (jack_client);
jack_client_close(jack_client);
}
jack_client=NULL;
jack_started = 0;
pthread_cond_broadcast(&jack_sem);
pthread_cond_destroy(&jack_sem);
pthread_mutex_destroy(&jack_mutex);
if (jack_inbuf)
free(jack_inbuf), jack_inbuf = 0;
if (jack_outbuf)
free(jack_outbuf), jack_outbuf = 0;
}
int jack_send_dacs(void)
{
t_sample * fp;
int j;
int rtnval = SENDDACS_YES;
int timenow;
int timeref = sys_getrealtime();
if (!jack_client) return SENDDACS_NO;
if (!sys_inchannels && !sys_outchannels) return (SENDDACS_NO);
if (jack_dio_error)
{
sys_log_error(ERR_RESYNC);
jack_dio_error = 0;
}
pthread_mutex_lock(&jack_mutex);
if (jack_filled >= jack_out_max)
pthread_cond_wait(&jack_sem,&jack_mutex);
if (!jack_client)
{
pthread_mutex_unlock(&jack_mutex);
return SENDDACS_NO;
}
jack_started = 1;
fp = sys_soundout;
for (j = 0; j < sys_outchannels; j++)
{
memcpy(jack_outbuf + (j * BUF_JACK) + jack_filled, fp,
DEFDACBLKSIZE*sizeof(t_sample));
fp += DEFDACBLKSIZE;
}
fp = sys_soundin;
for (j = 0; j < sys_inchannels; j++)
{
memcpy(fp, jack_inbuf + (j * BUF_JACK) + jack_filled,
DEFDACBLKSIZE*sizeof(t_sample));
fp += DEFDACBLKSIZE;
}
jack_filled += DEFDACBLKSIZE;
pthread_mutex_unlock(&jack_mutex);
if ((timenow = sys_getrealtime()) - timeref > 0.002)
{
rtnval = SENDDACS_SLEPT;
}
memset(sys_soundout, 0, DEFDACBLKSIZE*sizeof(t_sample)*sys_outchannels);
return rtnval;
}
void jack_getdevs(char *indevlist, int *nindevs,
char *outdevlist, int *noutdevs, int *canmulti,
int maxndev, int devdescsize)
{
int i, ndev;
*canmulti = 0; /* supports multiple devices */
ndev = 1;
for (i = 0; i < ndev; i++)
{
sprintf(indevlist + i * devdescsize, "JACK");
sprintf(outdevlist + i * devdescsize, "JACK");
}
*nindevs = *noutdevs = ndev;
}
void jack_listdevs( void)
{
post("device listing not implemented for jack yet\n");
}
#endif /* JACK */