[vorbis] Ogg Traffic for June 3, 2003

Carsten Haese carsten at uniqsys.com
Tue Jun 3 12:15:14 PDT 2003



Hi everybody:

It's been a while, so here is the latest round of Status Updates from
just about everybody in Xiph. The HTML version is at
http://www.vorbis.com/ot/20030603.html

Enjoy!

<p>Ogg Traffic for Tuesday, June 3, 2003

   Author:  Carsten "Purple" Haese
   Contact: [1]carsten at xiph.org
    Date:   June 3, 2003

   Table of Contents

       1   Status Updates
            1.1   Monty
            1.2   Stan Seibert
            1.3   Jean-Marc Valin
            1.4   Ed Zaleski
            1.5   Mike Smith
            1.6   Brendan Cully
            1.7   Mauricio Piacentini
            1.8   Ralph Giles
            1.9   Dan Miller
            1.10   Timothy Terriberry
            1.11   Andrew Chatham
            1.12   Manuel Lora
            1.13   Jack Moffitt
            1.14   Chris Cheney
       2   Recent Developments
            2.1   Ogg is officially official
            2.2   Positron goes Beta

   [2]Previous Issues of Ogg Traffic

1   Status Updates

1.1   Monty

   After finishing the lowmem-branch changes to Theora, Monty proceeded
   to implement the code on the Neuros. The code is ported, and is
   currently being optimized for real-time performance. The timeline for
   finishing the implementation is not final, but a first Beta is
   expected to appear in June.

1.2   Stan Seibert

   Stan was busy working on Positron, and released Beta 1 with basic sync
   support on May 22. Shortly thereafter, on May 28, he released Beta 2,
   with lots of fixes to bugs that were found by busy beta testers. He
   also cranked out a User's Manual and a Developer's Guide to Positron.

1.3   Jean-Marc Valin

   Jean-Marc is working on various Speex improvements, bugfixes, and some
   new features. The bugfixes will appear soon in a 1.0.1 release of
   Speex. The new features will appear eventually in Speex 1.1 (or 1.2,
   depending on what numbering scheme Jean-Marc decides on.)

   New post-1.0 features include an added experimental 4.8 kbps mode,
   adaptive gain control, and improved Voice Activity Detection. Bugfixes
   include various LSP corrections, an endianness issue in speexdec, and
   a Win32 playback bug in speexdec.

1.4   Ed Zaleski

   Ed, aka Oddsock, added the necessary infrastructure and stylesheets
   for a web administration front-end to icecast. Details can be found in
   his [3]announcement.

1.5   Mike Smith

   Mike fixed a bug in libshout that made it misbehave on streams with
   serial number 0. In the ogg library, he incorporated a patch by David
   Etherton that defines the correct types for compiling on PS2. He also
   fixed a number of warnings in the new icecast admin front-end code.

1.6   Brendan Cully

   Brendan added a libcurl version test to the icecast configure script.
   This should help building icecast (without YP support) on systems that
   either don't have libcurl, or that don't have a sufficiently recent
   version of libcurl.

1.7   Mauricio Piacentini

   Mauricio committed an experimental port of the Theora encoder and
   player examples to Win32 platforms. He also coded an example decoder
   that dumps the decoded video frames into a file, which is useful for
   comparing decoder outputs between different platforms.

1.8   Ralph Giles

   Ralph committed a few improvements to the Theora encoder and player
   examples. In the encoder, he added the capability to write to a file
   rather than stdout, and in the player he added the possibility to
   specify an input file. He also applied a patch by Jeremy C. Reed to
   the player to handle OSS on BSD systems properly.

1.9   Dan Miller

   Dan submitted a Theora bitstream change to transmit the header in a
   format that will make it easier for decoders to use. The header is now
   stored in a compressed Huffman tree rather than as frequency counts.

1.10   Timothy Terriberry

   Timothy has joined the Theora team and spearheaded a campaign to clean
   up compiler warnings about the use of uninitialized data and other
   unclean practices. This eliminated at least one bug that had led to
   different encoder outputs between different platforms.

1.11   Andrew Chatham

   Andrew, the maintainer of the ogg and vorbis python bindings committed
   a number of small fixes to the vorbis module. A patch from Andrew
   Malone allows negative quality values and fixes a truncation bug with
   weird wav files. Brian Warner sent in a patch to clear the python
   error correctly in Unicode conversion, and a patch by Csaba Henk
   corrects comment modification on Windows.

1.12   Manuel Lora

   Manuel helped Stan with Positron by writing the man page, and fixing
   various documentation files.

1.13   Jack Moffitt

   Jack assisted with the Positron beta 1 release by doing all the
   necessary distutils work.

1.14   Chris Cheney

   Chris helped with the Positron beta 2 release by updating the Debian
   packaging rules.

2   Recent Developments

2.1   Ogg is officially official

   Linus Walleij informs us in this [4]message about the conclusion to
   the efforts to standardize the Ogg encapsulation format. The drafts
   had been previously accepted by the IANA, but now the last step has
   been completed with the assignment of RFC numbers. The Ogg
   encapsulation format is now [5]RFC 3533, and the associated MIME type
   is in [6]RFC 3534.

2.2   Positron goes Beta

   As mentioned above in Stan's status update, the Linux synchronization
   manager for the [7]Neuros Digital Audio Computer, Positron, has
   reached the public Beta testing phase. It is not feature-complete yet
   (for example, HiSi support is not yet implemented), but basic
   synchronization works. If you would like to help, download
   [8]Positron, give it a try, and report any bugs you encounter.
   However, note that this is Beta software that may corrupt the Neuros's
   database. Please read the README file carefully, and follow the
   instructions for backing up the database.

References

   1. mailto:carsten at xiph.org
   2. http://www.vorbis.com/ot/
   3. http://www.xiph.org/archives/icecast/5037.html
   4. http://www.xiph.org/archives/vorbis/200305/0083.html
   5. http://www.ietf.org/rfc/rfc3533.txt
   6. http://www.ietf.org/rfc/rfc3534.txt
   7. http://www.neurosaudio.com/
   8. http://www.xiph.org/positron/

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