Changeset 3534

Timestamp:

Apr 13, 2011 7:41:41 PM (14 years ago)

Author:

nanang

Message:

Re #1182: Added macro setting PJMEDIA_STREAM_RESV_PAYLOAD_LEN to let stream reserve some space for application extra data in the RTP payload, e.g: SRTP auth tag.

Location:

pjproject/branches/projects/2.0-dev/pjmedia

Files:

• include/pjmedia/config.h (modified) (1 diff)
• src/pjmedia/vid_stream.c (modified) (1 diff)

pjproject/branches/projects/2.0-dev/pjmedia/include/pjmedia/config.h

@@ -516 +516 @@
 
 /**
+ * Reserve some space for application extra data, e.g: SRTP auth tag,
+ * in RTP payload, so the total payload length will not exceed the MTU.
+ */
+#ifndef PJMEDIA_STREAM_RESV_PAYLOAD_LEN
+#   define PJMEDIA_STREAM_RESV_PAYLOAD_LEN      20
+#endif
+
+
+/**
  * Specify the maximum duration of silence period in the codec, in msec. 
  * This is useful for example to keep NAT binding open in the firewall

pjproject/branches/projects/2.0-dev/pjmedia/src/pjmedia/vid_stream.c

@@ -1188 +1188 @@
     /* Init codec param */
     info->codec_param->dir = info->dir;
-    info->codec_param->enc_mtu = PJMEDIA_MAX_MTU - sizeof(pjmedia_rtp_hdr);
+    info->codec_param->enc_mtu = PJMEDIA_MAX_MTU - sizeof(pjmedia_rtp_hdr) - 
+                                 PJMEDIA_STREAM_RESV_PAYLOAD_LEN;
 
     /* Init and open the codec. */