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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio 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 Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <time.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <polypcore/util.h>
#include "sdp.h"
static const char* map_format(pa_sample_format_t f) {
switch (f) {
case PA_SAMPLE_S16BE: return "L16";
case PA_SAMPLE_U8: return "L8";
case PA_SAMPLE_ALAW: return "PCMA";
case PA_SAMPLE_ULAW: return "PCMU";
default:
return NULL;
}
}
char *pa_sdp_build(int af, const void *src, const void *dst, const char *name, uint16_t port, uint8_t payload, const pa_sample_spec *ss) {
uint32_t ntp;
char buf_src[64], buf_dst[64];
const char *u, *f, *a;
assert(src);
assert(dst);
assert(af == AF_INET || af == AF_INET6);
f = map_format(ss->format);
assert(f);
if (!(u = getenv("USER")))
if (!(u = getenv("USERNAME")))
u = "-";
ntp = time(NULL) + 2208988800;
a = inet_ntop(af, src, buf_src, sizeof(buf_src));
assert(a);
a = inet_ntop(af, dst, buf_dst, sizeof(buf_dst));
assert(a);
return pa_sprintf_malloc(
"v=0\n"
"o=%s %lu 0 IN %s %s\n"
"s=%s\n"
"c=IN %s %s\n"
"t=%lu 0\n"
"a=recvonly\n"
"m=audio %u RTP/AVP %i\n"
"a=rtpmap:%i %s/%u/%u\n"
"a=type:broadcast\n",
u, (unsigned long) ntp, af == AF_INET ? "IP4" : "IP6", buf_src,
name,
af == AF_INET ? "IP4" : "IP6", buf_dst,
(unsigned long) ntp,
port, payload,
payload, f, ss->rate, ss->channels);
}
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