/*
* readport()
* Loop that polls on the network file descriptor
*/
int
SoundIP::readstream(uint8_t *buffer)
{
struct pollfd pfd;
int n, plen, rv;
struct sockaddr_storage z;
socklen_t len = sizeof(z);
plen = 4096;
if (stream < 0)
return 0;
if (portmode_udp) {
rv = recvfrom(stream, buffer, plen, MSG_PEEK | MSG_DONTWAIT, (struct sockaddr *)&z, &len);
if (rv < 0)
return 0;
//rv = connect(stream, (struct sockaddr *)&z, len);
//udp_connected = true;
return ( read(stream, buffer, plen) );
}
/* Setup Network FD */
pfd.fd = stream;
pfd.events = POLLIN;
n = poll(&pfd, 1, -1);
if (n <= 0) {
closestream();
return n;
}
if (pfd.revents & POLLIN) {
n = read(stream, buffer, plen);
if (n == 0) {
closestream();
}
} else
n = 0;
return n;
}
///
/// .wav を読み込む
void Wav::load(
const FilePath& filepath
) {
// ファイルを開いてサイズを取得
openstream(filepath);
// サイズ分のメモリを確保
data_ = (uint8_t*)T3_SYS_ALLOC(size_);
datastrage_allocated_ = true;
// 読み込み
readstream(data_, size_);
// ファイルを閉じる
closestream();
}
int
pread_DPMI (struct timeval *ptime,
int *plen,
int *ptlen,
void **pphys, int *pphystype, struct ip **ppip, void **pplast)
{
cap_head *caphead;
int rpStatus;
char *data;
struct ether_header *ether;
// we use ``while'' rather than ``if'' since we may discard non-IP packets
while ((rpStatus = read_post (&dpmi.myStream, &data, dpmi.myFilter)) != 0)
{
caphead = (cap_head *) data;
ptime->tv_usec = caphead->ts.tv_psec / 1000 / 1000;
ptime->tv_sec = caphead->ts.tv_sec;
ether = (struct ether_header *) (data + sizeof (cap_head));
*plen = caphead->len;
/* Lenght of the packet on the wire */
*ptlen = caphead->caplen;
/* Portion of the Lenght of captured packet present in this
sample */
*pphys = ether;
*pphystype = PHYS_ETHER;
*ppip =
(struct ip *) (data + sizeof (cap_head) + sizeof (struct ethhdr));
*pplast = (char *) data + *ptlen + sizeof (cap_head);
/* if it's not IP, then skip it */
if ((ntohs (ether->ether_type) != ETHERTYPE_IP) &&
(ntohs (ether->ether_type) != ETHERTYPE_IPV6))
{
if (debug > 2)
fprintf (fp_stderr, "pread_tcpdump: not an IP packet\n");
continue;
}
// this is used depending on internal_wired value
// char nic[8]; // Identifies the CI where the frame was caught
// char mampid[8]; // Identifies the MP where the frame was caught,
if (dpmi.first || first)
{
// unless, otherwise specified, the first frame
// is assumed to be ``incoming'', and thus determines
// the incoming CI:MP couple
dpmi.inCI = strdup (caphead->nic);
dpmi.inMP = strdup (caphead->mampid);
dpmi.first = first = FALSE;
}
coming_in = !strcmp (caphead->nic, dpmi.inCI) &&
!strcmp (caphead->mampid, dpmi.inMP);
// ok, so we read the packet and returned
// ppip and pplast pointers to tstat
return 1;
}
closestream (&dpmi.myStream);
return 0;
}
