[FFmpeg-soc] [soc]: r426 - qcelp/doc/NOTES
reynaldo
subversion at mplayerhq.hu
Sun Jul 15 02:06:09 CEST 2007
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
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