| /* $Id$ */ |
| /* |
| * 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; |
| } |