[FFmpeg-soc] [soc]: r426 - qcelp/doc/NOTES

[reynaldo]

Author: reynaldo
Date: Sun Jul 15 02:06:08 2007
New Revision: 426

Log:
some info on 'codec frame' fmt

Modified:
   qcelp/doc/NOTES

Modified: qcelp/doc/NOTES
==============================================================================
--- qcelp/doc/NOTES	(original)
+++ qcelp/doc/NOTES	Sun Jul 15 02:06:08 2007
@@ -28,9 +28,28 @@ CBSIGNi  |  Sign of the Codebook Gain fo
 
 
 Bits for each rate packet (Page 26)
--------------------------
+-----------------------------------
 
 Rate 1   | 264 + 2 Reserved
 Rate 1/2 | 124
 Rate 1/4 | 52  + 2 Reserved
 Rate 1/8 | 16  + 4 Reserved
+
+Optional 'codec frame' packing (seen on our samples)
+----------------------------------------------------
+
+This is an abstract from IETF's "RTP Payload Format for
+PureVoice(tm) Audio"
+
+http://tools.ietf.org/html/draft-mckay-qcelp-02
+
+OCTET 0   RATE      TOTAL CODEC data frame size (in octets)
+-----------------------------------------------------------
+  0       Blank     1
+  1       1/8       4
+  2       1/4       8
+  3       1/2       17
+  4       1         35
+  5       reserved  8 (SHOULD be treated as a reserved value)
+ 14       Erasure   1 (SHOULD NOT be transmitted by sender)
+ other    n/a       reserved