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/*
* Copyright 1994-2012 Olivier Girondel
*
* This file is part of lebiniou.
*
* lebiniou 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.
*
* lebiniou 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 lebiniou. If not, see <http://www.gnu.org/licenses/>.
*/
#include "context.h"
#include <jack/jack.h>
u_long id = 1330135598;
u_long options = BEQ_THREAD;
#define INSIZE 256
/* JACK data */
static jack_port_t **input_ports;
static jack_client_t *client;
static char *source_names[2] = { NULL, NULL };
static void
jack_shutdown(__attribute__ ((unused)) void *arg)
{
/* TODO: do not xerror */
xerror("JACK shut down\n");
}
static int
process(jack_nframes_t nframes, void *arg)
{
unsigned int chn;
size_t i;
Context_t *ctx = (Context_t *)arg;
jack_default_audio_sample_t *in;
nframes = (nframes > INSIZE) ? INSIZE : nframes;
for (chn = 0; chn < 2; chn++) {
in = jack_port_get_buffer(input_ports[chn], nframes);
for (i = 0; i < nframes; i++)
ctx->input->data[A_LEFT+chn][i] = in[i];
}
Input_set(ctx->input, A_STEREO);
return 0;
}
static void
setup_ports(char *source_names[])
{
unsigned int i;
const char **ports;
input_ports = xcalloc(2, sizeof(jack_port_t *));
for (i = 0; i < 2; i++) {
char name[64];
sprintf(name, "input_%d", i);
if ((input_ports[i] = jack_port_register(client, name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0)) == 0) {
fprintf(stderr, "[!] JACK: cannot register input port \"%s\" !\n", name);
jack_client_close(client);
exit(1);
}
else printf("[i] JACK: registered %s\n", name);
}
ports = jack_get_ports(client, NULL, NULL, JackPortIsPhysical|JackPortIsOutput);
if (NULL == ports)
xerror("JACK: no physical capture ports\n");
for (i = 0; i < 2; i++) {
if (jack_connect(client, ports[i], jack_port_name(input_ports[i]))) {
fprintf(stderr, "[!] JACK: cannot connect input port %s to %s\n", jack_port_name(input_ports[i]), source_names[i]);
jack_client_close(client);
exit(1);
}
else printf("[i] JACK: connected %s to %s\n", source_names[i], jack_port_name(input_ports[i]));
}
xfree(ports);
}
void
create(Context_t *ctx)
{
ctx->input = Input_new(INSIZE);
if ((client = jack_client_open(PACKAGE, JackNullOption, NULL)) == 0)
xerror("JACK server not running ?\n");
jack_set_process_callback(client, process, ctx);
jack_on_shutdown(client, jack_shutdown, NULL);
if (jack_activate(client))
xerror("JACK: cannot activate client\n");
if (NULL == (source_names[0] = getenv("BINIOU_JACK_LEFT")))
source_names[0] = "system:capture_1";
if (NULL == (source_names[1] = getenv("BINIOU_JACK_RIGHT")))
source_names[1] = "system:capture_2";
printf("[i] JACK: left capture from %s\n", source_names[0]);
printf("[i] JACK: right capture from %s\n", source_names[1]);
setup_ports(source_names);
}
void
destroy(Context_t *ctx)
{
jack_client_close(client);
Input_delete(ctx->input);
printf("[+] JACK plugin exiting\n");
}
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