*/
/** \file udp_recv.c Paraslash's udp receiver */
+#include <regex.h>
#include <dirent.h>
+#include <sys/socket.h>
#include <net/if.h>
#include "para.h"
#include "ggo.h"
#include "recv.h"
#include "udp_recv.cmdline.h"
-#include "audiod.h"
#include "string.h"
#include "net.h"
#include "fd.h"
+#include "buffer_tree.h"
/** The size of the receiver node buffer. */
#define UDP_RECV_CHUNK_SIZE (128 * 1024)
struct private_udp_recv_data {
/** The socket file descriptor. */
int fd;
+ struct btr_pool *btrp;
};
static void udp_recv_pre_select(struct sched *s, struct task *t)
{
struct receiver_node *rn = container_of(t, struct receiver_node, task);
struct private_udp_recv_data *purd = rn->private_data;
+ int ret;
+ if (rn->btrn) {
+ ret = generic_recv_pre_select(s, t);
+ if (ret <= 0)
+ return;
+ }
para_fd_set(purd->fd, &s->rfds, &s->max_fileno);
}
return 1;
}
-static void udp_recv_post_select(__a_unused struct sched *s, struct task *t)
+static void udp_recv_post_select_nobtr(__a_unused struct sched *s, struct task *t)
{
struct receiver_node *rn = container_of(t, struct receiver_node, task);
struct private_udp_recv_data *purd = rn->private_data;
if (!ret)
return;
packet_size = ret;
+ if (packet_size >= FEC_EOF_PACKET_LEN)
+ if (!memcmp(tmpbuf, FEC_EOF_PACKET, FEC_EOF_PACKET_LEN))
+ return;
t->error = add_rn_output(rn, tmpbuf, packet_size);
if (t->error < 0)
return;
t->error = 1;
}
+static void udp_recv_post_select_btr(__a_unused struct sched *s, struct task *t)
+{
+ struct receiver_node *rn = container_of(t, struct receiver_node, task);
+ struct private_udp_recv_data *purd = rn->private_data;
+ struct btr_node *btrn = rn->btrn;
+ int ret;
+ char *buf = NULL;
+ size_t packet_size, bufsize;
+
+ t->error = 0;
+ ret = btr_node_status(btrn, 0, BTR_NT_ROOT);
+ if (ret < 0)
+ goto err;
+ if (ret == 0)
+ return;
+ if (!FD_ISSET(purd->fd, &s->rfds))
+ return;
+ bufsize = btr_pool_get_buffer(purd->btrp, &buf);
+ ret = -E_UDP_OVERRUN;
+ if (bufsize == 0)
+ goto err;
+ ret = recv_bin_buffer(purd->fd, buf, bufsize);
+ if (ret == 0)
+ ret = -E_RECV_EOF;
+ if (ret < 0)
+ goto err;
+ packet_size = ret;
+ if (packet_size >= FEC_EOF_PACKET_LEN) {
+ if (!memcmp(buf, FEC_EOF_PACKET, FEC_EOF_PACKET_LEN)) {
+ PARA_INFO_LOG("received eof packet\n");
+ ret = -E_RECV_EOF;
+ goto err;
+ }
+ }
+ btr_add_output_pool(purd->btrp, packet_size, btrn);
+ return;
+err:
+ btr_remove_node(btrn);
+ t->error = ret;
+ close(purd->fd);
+ purd->fd = -1;
+}
+
+static void udp_recv_post_select(__a_unused struct sched *s, struct task *t)
+{
+ struct receiver_node *rn = container_of(t, struct receiver_node, task);
+ if (rn->btrn)
+ return udp_recv_post_select_btr(s, t);
+ udp_recv_post_select_nobtr(s, t);
+}
+
static void udp_shutdown(void)
{
return;
if (purd->fd >= 0)
close(purd->fd);
+ btr_pool_free(purd->btrp);
free(rn->private_data);
free(rn->buf);
}
}
ret = mark_fd_nonblocking(purd->fd);
- if (ret < 0)
+ if (ret < 0) {
+ close(purd->fd);
goto err;
- PARA_NOTICE_LOG("receiving from %s:%d, fd=%d\n", c->host_arg,
+ }
+ PARA_INFO_LOG("receiving from %s:%d, fd=%d\n", c->host_arg,
c->port_arg, purd->fd);
+ purd->btrp = btr_pool_new("udp_recv", 320 * 1024);
return purd->fd;
err:
free(rn->private_data);
return ret;
}
+static void udp_recv_free_config(void *conf)
+{
+ udp_recv_cmdline_parser_free(conf);
+}
+
/**
* The init function of the udp receiver.
*
r->pre_select = udp_recv_pre_select;
r->post_select = udp_recv_post_select;
r->parse_config = udp_recv_parse_config;
+ r->free_config = udp_recv_free_config;
r->help = (struct ggo_help) {
.short_help = udp_recv_args_info_help,
.detailed_help = udp_recv_args_info_detailed_help
};
+ udp_recv_cmdline_parser_free(&dummy);
}