From 2c222ee63ba3f3ec9e41f3f5582bf06b1d308b34 Mon Sep 17 00:00:00 2001
From: michael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Fri, 10 Mar 2006 02:49:29 +0000
Subject: header_checksum

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@17793 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 DOCS/tech/mpcf.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/DOCS/tech/mpcf.txt b/DOCS/tech/mpcf.txt
index 662634f898..b31668c7f8 100644
--- a/DOCS/tech/mpcf.txt
+++ b/DOCS/tech/mpcf.txt
@@ -310,6 +310,8 @@ note, demuxers MUST be able to deal with new and unknown headers
 packet_header
         startcode                               f(64)
         forward_ptr                             v
+        if(forward_ptr > 4096)
+            header_checksum                     u(32)
 
 packet_footer
         reserved_bytes
@@ -589,6 +591,9 @@ checksum
     for frame headers the checksum contains the framecode byte and all
     following bytes upto the checksum itself
 
+header_checksum
+    checksum over the startcode and forward pointer
+
 Syncpoint tags:
 ---------------
 
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