[MPlayer-cvslog] CVS: main/DOCS/tech mpcf.txt,1.78,1.79

[Oded Shimon CVS]

CVS change done by Oded Shimon CVS

Update of /cvsroot/mplayer/main/DOCS/tech
In directory mail:/var2/tmp/cvs-serv29512/DOCS/tech

Modified Files:
	mpcf.txt 
Log Message:
compress back_ptr better by multiplying by 8


Index: mpcf.txt
===================================================================
RCS file: /cvsroot/mplayer/main/DOCS/tech/mpcf.txt,v
retrieving revision 1.78
retrieving revision 1.79
diff -u -r1.78 -r1.79
--- mpcf.txt	22 Sep 2005 07:17:57 -0000	1.78
+++ mpcf.txt	24 Sep 2005 04:43:02 -0000	1.79
@@ -282,8 +282,11 @@
 	after the forward_ptr to the first byte of the next packet)
 
 back_ptr
-	pointer to the latest syncpoint, for which there is at least one
-	keyframe prior to the global_timestamp in every stream
+	real_back_ptr = back_ptr * 8 + 7
+	real_back_ptr must point to a position such that a syncpoint startcode begins
+	within the next 8 bytes, and such that at least one keyframe for each stream
+	lies between the syncpoint to which real_back_ptr points, and the current
+	syncpoint.
 
 file_id_string
 	"nut/multimedia container\0"