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/*
* Copyright 1994-2022 Olivier Girondel
* Copyright 2021-2022 Jérémie Astor
*
* 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 <lo/lo.h>
#include "context.h"
#include "settings.h"
#include "pthread_utils.h"
// plugin must define option and version
uint32_t options = BO_NONE;
uint32_t version = 0;
// default input size if not defined by the LEBINIOU_OSC_BUFSIZE environment variable
#define MIN_BUF_SIZE 256
#define MAX_BUF_SIZE 4096
#define INSIZE 1024
static uint16_t insize = INSIZE;
// default port for the OSC server if not defined by the LEBINIOU_OSC_PORT environment variable
#define DEFAULT_PORT "9999"
// get the position inside the input buffer
static uint16_t count = 0;
// OSC server
static lo_server_thread thread = NULL;
// internal input data
static double *input_l = NULL;
static double *input_r = NULL;
static void
osc_error_handler(int num, const char *msg, const char *where)
{
fprintf(stderr, "[!] OSC: problem %i: %s %s !\n", num, msg, where);
}
static int
input_handler(const char *path, const char *type, lo_arg **argv,
int argc, lo_message msg, void *data)
{
Context_t *ctx = (Context_t*)data;
assert(argc == 2);
assert(NULL != argv[0]);
assert(NULL != argv[1]);
input_l[count] = argv[0]->d;
input_r[count] = argv[1]->d;
if (++count == insize) {
if (0 == ctx->input->mute) {
if (!xpthread_mutex_lock(&ctx->input->mutex)) {
for (uint16_t idx = 0; idx < insize; idx++) {
ctx->input->data[A_LEFT][idx] = input_l[idx];
ctx->input->data[A_RIGHT][idx] = input_r[idx];
}
Input_set(ctx->input, A_STEREO);
xpthread_mutex_unlock(&ctx->input->mutex);
}
}
count = 0;
}
return 0;
}
static const char *
get_port(void)
{
const char *port = getenv("LEBINIOU_OSC_PORT");
if (NULL != port) {
return port;
}
return DEFAULT_PORT;
}
static int
init_osc(const Context_t *ctx)
{
const char *port = get_port();
thread = lo_server_thread_new(port, osc_error_handler);
if (NULL == thread) {
fprintf(stderr, "[!] OSC: cannot create server at port \"%s\" !\n", port);
return 1;
}
if (lo_server_thread_start(thread)) {
fprintf(stderr, "[!] OSC: cannot start server\n");
return 1;
}
if (NULL == lo_server_thread_add_method(thread, "/lebiniou/audioinput", "dd", input_handler, (void *)ctx)) {
fprintf(stderr, "[!] OSC: cannot create method\n");
return 1;
}
return 0;
}
static uint16_t
sanitize_size(const uint16_t insize) {
if (insize > MIN_BUF_SIZE && insize < MAX_BUF_SIZE) {
return insize;
}
fprintf(stderr, "[!] OSC: invalid buffer size requested, using default value (%u)\n", INSIZE);
return INSIZE;
}
int8_t
create(Context_t *ctx)
{
const char *user_insize = getenv("LEBINIOU_OSC_BUFSIZE");
const uint16_t req_insize = user_insize ? atoi(user_insize) : INSIZE;
insize = sanitize_size(req_insize);
ctx->input = Input_new(insize);
input_l = xmalloc(sizeof(double) * insize);
input_r = xmalloc(sizeof(double) * insize);
if (init_osc(ctx)) {
exit(1);
}
return 1;
}
void
destroy(Context_t *ctx)
{
lo_server_thread_del_method(thread, "/lebiniou/audioinput", "dd");
lo_server_thread_stop(thread);
lo_server_thread_free(thread);
Input_delete(ctx->input);
xfree(input_l);
xfree(input_r);
}
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