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/* $Id$ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pjmedia-codec/g7221_sdp_match.h>
#include <pjmedia/errno.h>
#include <pj/pool.h>
#include <pj/string.h>
#define GET_FMTP_IVAL_BASE(ival, base, fmtp, param, default_val) \
do { \
pj_str_t s; \
char *p; \
p = pj_stristr(&fmtp.fmt_param, ¶m); \
if (!p) { \
ival = default_val; \
break; \
} \
pj_strset(&s, p + param.slen, fmtp.fmt_param.slen - \
(p - fmtp.fmt_param.ptr) - param.slen); \
ival = pj_strtoul2(&s, NULL, base); \
} while (0)
#define GET_FMTP_IVAL(ival, fmtp, param, default_val) \
GET_FMTP_IVAL_BASE(ival, 10, fmtp, param, default_val)
PJ_DEF(pj_status_t) pjmedia_codec_g7221_match_sdp(pj_pool_t *pool,
pjmedia_sdp_media *offer,
unsigned o_fmt_idx,
pjmedia_sdp_media *answer,
unsigned a_fmt_idx,
unsigned option)
{
const pjmedia_sdp_attr *attr_ans;
const pjmedia_sdp_attr *attr_ofr;
pjmedia_sdp_fmtp fmtp;
unsigned a_bitrate, o_bitrate;
const pj_str_t bitrate = {"bitrate=", 8};
pj_status_t status;
PJ_UNUSED_ARG(pool);
PJ_UNUSED_ARG(option);
/* Parse offer */
attr_ofr = pjmedia_sdp_media_find_attr2(offer, "fmtp",
&offer->desc.fmt[o_fmt_idx]);
if (!attr_ofr)
return PJMEDIA_SDP_EINFMTP;
status = pjmedia_sdp_attr_get_fmtp(attr_ofr, &fmtp);
if (status != PJ_SUCCESS)
return status;
GET_FMTP_IVAL(o_bitrate, fmtp, bitrate, 0);
/* Parse answer */
attr_ans = pjmedia_sdp_media_find_attr2(answer, "fmtp",
&answer->desc.fmt[a_fmt_idx]);
if (!attr_ans)
return PJMEDIA_SDP_EINFMTP;
status = pjmedia_sdp_attr_get_fmtp(attr_ans, &fmtp);
if (status != PJ_SUCCESS)
return status;
GET_FMTP_IVAL(a_bitrate, fmtp, bitrate, 0);
/* Compare bitrate in answer and offer. */
if (a_bitrate != o_bitrate)
return PJMEDIA_SDP_EFORMATNOTEQUAL;
return PJ_SUCCESS;
}
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