1 files changed, 111 insertions, 0 deletions
diff --git a/pjmedia/src/pjmedia/stream_common.c b/pjmedia/src/pjmedia/stream_common.c
new file mode 100644
index 00000000..9970cc78
--- /dev/null
+++ b/pjmedia/src/pjmedia/stream_common.c
@@ -0,0 +1,111 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2011 Teluu Inc. (http://www.teluu.com)
+ *
+ * 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/stream_common.h>
+#include <pj/log.h>
+
+#define THIS_FILE	"stream_common.c"
+
+/*
+ * Parse fmtp for specified format/payload type.
+ */
+PJ_DEF(pj_status_t) pjmedia_stream_info_parse_fmtp( pj_pool_t *pool,
+						    const pjmedia_sdp_media *m,
+						    unsigned pt,
+						    pjmedia_codec_fmtp *fmtp)
+{
+    const pjmedia_sdp_attr *attr;
+    pjmedia_sdp_fmtp sdp_fmtp;
+    char *p, *p_end, fmt_buf[8];
+    pj_str_t fmt;
+    pj_status_t status;
+
+    pj_assert(m && fmtp);
+
+    pj_bzero(fmtp, sizeof(pjmedia_codec_fmtp));
+
+    /* Get "fmtp" attribute for the format */
+    pj_ansi_sprintf(fmt_buf, "%d", pt);
+    fmt = pj_str(fmt_buf);
+    attr = pjmedia_sdp_media_find_attr2(m, "fmtp", &fmt);
+    if (attr == NULL)
+	return PJ_SUCCESS;
+
+    /* Parse "fmtp" attribute */
+    status = pjmedia_sdp_attr_get_fmtp(attr, &sdp_fmtp);
+    if (status != PJ_SUCCESS)
+	return status;
+
+    /* Prepare parsing */
+    p = sdp_fmtp.fmt_param.ptr;
+    p_end = p + sdp_fmtp.fmt_param.slen;
+
+    /* Parse */
+    while (p < p_end) {
+	char *token, *start, *end;
+
+	if (fmtp->cnt >= PJMEDIA_CODEC_MAX_FMTP_CNT) {
+	    PJ_LOG(4,(THIS_FILE,
+		      "Warning: fmtp parameter count exceeds "
+		      "PJMEDIA_CODEC_MAX_FMTP_CNT"));
+	    return PJ_SUCCESS;
+	}
+
+	/* Skip whitespaces */
+	while (p < p_end && (*p == ' ' || *p == '\t')) ++p;
+	if (p == p_end)
+	    break;
+
+	/* Get token */
+	start = p;
+	while (p < p_end && *p != ';' && *p != '=') ++p;
+	end = p - 1;
+
+	/* Right trim */
+	while (end >= start && (*end == ' '  || *end == '\t' || 
+				*end == '\r' || *end == '\n' ))
+	    --end;
+
+	/* Forward a char after trimming */
+	++end;
+
+	/* Store token */
+	if (end > start) {
+	    if (pool) {
+		token = (char*)pj_pool_alloc(pool, end - start);
+		pj_ansi_strncpy(token, start, end - start);
+	    } else {
+		token = start;
+	    }
+	    if (*p == '=')
+		/* Got param name */
+		pj_strset(&fmtp->param[fmtp->cnt].name, token, end - start);
+	    else
+		/* Got param value */
+		pj_strset(&fmtp->param[fmtp->cnt++].val, token, end - start);
+	} else if (*p != '=') {
+	    ++fmtp->cnt;
+	}
+
+	/* Next */
+	++p;
+    }
+
+    return PJ_SUCCESS;
+}
+