1 files changed, 91 insertions, 0 deletions
diff --git a/pjmedia/src/pjmedia-codec/g7221_sdp_match.c b/pjmedia/src/pjmedia-codec/g7221_sdp_match.c
new file mode 100644
index 00000000..a9cc17dc
--- /dev/null
+++ b/pjmedia/src/pjmedia-codec/g7221_sdp_match.c
@@ -0,0 +1,91 @@
+/* $Id$ */
+/* 
+ * 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, &param); \
+	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;
+}