shithub: opus

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Flesh out the Implementation Status section a bit.

Add sections on VLC, foobar200, and Rockbox.
Be more complete about listing which features of the format are
 actually supported by each implementation.
Still need to do more testing for Chrome, FFmpeg, and libav.

--- a/doc/draft-ietf-codec-oggopus.xml

+++ b/doc/draft-ietf-codec-oggopus.xml

@@ -1009,31 +1009,36 @@

  opus-tools package and repository.

 While still 'development' status (pre-1.0) these utilities are

  in active public use, and have shipped with some recent Linux

- distributions.

+ distributions and in homebrew.

 Together they implement basic read, write and playback support of

  Ogg Opus files including metadata, multichannel, start and end

- trimming.

+ trimming, the gain field, live streams, and chained files, but currently do

+ not support seeking.

 This implementation is open source.

 </t>

-<t><list>

-  <t>https://git.xiph.org/?p=opus-tools.git</t>

-  <t>http://www.opus-codec.org/downloads/</t>

+<t><list style="symbols">

+  <t><eref target="https://git.xiph.org/?p=opus-tools.git"/></t>

+  <t><eref target="http://www.opus-codec.org/downloads/"/></t>

 </list></t>

 </section>

 <section anchor="impl-opusfile" title="opusfile">

 <t>

-The opusfile library is a separate implementation of this draft

- as a helper library. Its primary focus is on efficient seeking,

- including over HTTP and in concatenated streams.

-This library is in early development and is not widely deployed.

-It supports multichannel decode and playback, but does not create

- Ogg Opus files.

+The opusfile library is a separate implementation of this draft as a helper

+ library for demuxing and decoding.

+Like opus-tools, it supports metadata, multichannel, start and end trimming,

+ the gain field, live streams, and chained files.

+Its primary focus is efficient seeking, including over HTTP and in chained

+ streams.

+It currently does not create Ogg Opus files.

+This library is in early development and is not widely deployed, though several

+ projects are currently using it, including xmms2, taglib, and cmus, and it is

+ shipped in some Linux distributions and in homebrew.

 This implementation is open source.

 </t>

-<t><list>

-  <t>https://git.xiph.org/?p=opusfile.git</t>

-  <t>http://www.opus-codec.org/downloads/</t>

+<t><list style="symbols">

+  <t><eref target="https://git.xiph.org/?p=opusfile.git"/></t>

+  <t><eref target="http://www.opus-codec.org/downloads/"/></t>

 </list></t>

 </section>

@@ -1041,16 +1046,25 @@

 <t>

 The Firefox web browser is a widely deployed implementation of

  this draft.

-Basic playback support with the HTML5 <audio> element was

- added in Firefox 15, in production release starting August 28, 2012.

+Basic playback support with the HTML5 <audio> element, including start

+ and end trimming, the gain field, live streams, multiplexing with other

+ streams (for, e.g., the <video> tag), and seeking, was added in

+ Firefox 15, in production release starting August 28, 2012.

 Multichannel support was added in Firefox 17, in production release

  starting November 20, 2012.

+Metadata support was added in Firefox 18, in production release starting

+ January 8, 2013.

+Chained files (as streams only, with seeking disabled) will be supported in

+ Firefox 20, scheduled to enter production release in early April, 2013.

 This implementation is open source.

 </t>

-<t><list>

-  <t>https://mozilla.org/firefox/</t>

-  <t>https://hacks.mozilla.org/2012/08/opus-support-for-webrtc/</t>

-  <t>https://bugzilla.mozilla.org/show_bug.cgi?id=748144</t>

+<t><list style="symbols">

+  <t><eref target="https://mozilla.org/firefox/"/></t>

+  <t><eref target="https://hacks.mozilla.org/2012/08/opus-support-for-webrtc/"/></t>

+  <t><eref target="https://bugzilla.mozilla.org/show_bug.cgi?id=674225"/></t>

+  <t><eref target="https://bugzilla.mozilla.org/show_bug.cgi?id=748144"/></t>

+  <t><eref target="https://bugzilla.mozilla.org/show_bug.cgi?id=778050"/></t>

+  <t><eref target="https://bugzilla.mozilla.org/show_bug.cgi?id=455165"/></t>

 </list></t>

 </section>

@@ -1059,15 +1073,17 @@

 Google's Chrome web browser has support for this draft with the

  HTML5 <audio> element in M25 and M26, the dev and

  canary channels respectively as of January, 2013.

-Both require passing --enable-opus-playback to the executable

+This implementation currently does not support end trimming, the gain tag,

+ chained files, or the .opus extension.

+Both M25 and M26 require passing --enable-opus-playback to the executable

  to enable support at the time of this writing.

 This implementation is based on open source code in

  Chromium and WebKit.

 </t>

-<t><list>

-  <t>  https://www.google.com/intl/en/chrome/browser/</t>

-  <t>https://www.google.com/intl/en/chrome/browser/canary.html</t>

-  <t>http://code.google.com/p/chromium/issues/detail?id=104241</t>

+<t><list style="symbols">

+  <t><eref target="https://www.google.com/intl/en/chrome/browser/"/></t>

+  <t><eref target="https://www.google.com/intl/en/chrome/browser/canary.html"/></t>

+  <t><eref target="http://code.google.com/p/chromium/issues/detail?id=104241"/></t>

 </list></t>

 </section>

@@ -1074,15 +1090,20 @@

 <section anchor="impl-gstreamer" title="GStreamer">

 <t>

 The GStreamer media framework includes an implementation of

- this draft. Support was first added in early 2011, and is part

- of the 0.11 and 1.0.x releases.

+ this draft.

+It supports metadata, multichannel, start and end trimming, the gain field,

+ live streams, chained files, multiplexing with other streams (e.g., video),

+ and seeking.

+Support was first added in early 2011, and is part of the 0.11 and 1.0.x

+ releases.

 The code implementing this draft is in the gst-plugins-bad collection,

  which general indicated unsupported and/or experimental code,

  despite its release status.

 This implementation is open source.

 </t>

-<t><list>

-  <t>http://gstreamer.net/</t>

+<t><list style="symbols">

+  <t><eref target="http://gstreamer.net/"/></t>

+  <t><eref target="http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/"/></t>

 </list></t>

 </section>

@@ -1094,8 +1115,8 @@

  preserved.

 This implementation is open source.

 </t>

-<t><list>

-  <t>http://ffmpeg.org/</t>

+<t><list style="symbols">

+  <t><eref target="http://ffmpeg.org/"/></t>

 </list></t>

 </section>

@@ -1105,8 +1126,59 @@

  similar to FFmpeg.

 This implementation is open source.

 </t>

-<t><list>

-  <t>http://libav.org/</t>

+<t><list style="symbols">

+  <t><eref target="http://libav.org/"/></t>

+</list></t>

+</section>

+

+<section anchor="impl-vlc" title="VLC">

+<t>

+VLC is another widely deployed implementation of demuxing, decoding, and

+ playback support for this draft.

+It supports metadata, multichannel, start and end trimming, the gain field,

+ live streams, seeking, chained files (though seeking does not work

+ correctly with chained files), and multiplexing with other streams (e.g.,

+ video).

+Opus support was added in version 2.0.4, released on October 18, 2012.

+This implementation is open source.

+</t>

+<t><list style="symbols">

+  <t><eref target="http://www.videolan.org/vlc/"/></t>

+  <t><eref target="http://git.videolan.org/?p=vlc.git"/></t>

+  <t><eref target="http://trac.videolan.org/vlc/ticket/7185"/></t>

+</list></t>

+</section>

+

+<section anchor="impl-foobar2k" title="foobar2000">

+<t>

+A popular Windows application, foobar2000 implements read, write, and playback

+ support for this draft.

+It supports metadata, multichannel, start and end trimming, the gain field,

+ live streams, chained files, and seeking.

+Opus support was added in version 1.1.14, released on August 17, 2012.

+Encoding support is implemented using opusenc from opus-tools.

+This implementation is closed source.

+</t>

+<t><list style="symbols">

+  <t><eref target="http://www.foobar2000.org/"/></t>

+</list></t>

+</section>

+

+<section anchor="impl-rockbox" title="Rockbox">

+<t>

+Rockbox is an established alternative firmware for portable music players

+ (typically small, embedded devices) that implements demuxing, decoding, and

+ playback support for this draft.

+It supports metadata, start and end trimming, the gain field, and seeking.

+It does not currently support multichannel or chained files.

+Opus is currently only supported in development builds, though it is scheduled

+ to be included in the next stable release (3.13).

+This implementation is open source.

+</t>

+<t><list style="symbols">

+  <t><eref target="http://www.rockbox.org/"/></t>

+  <t><eref target="http://git.rockbox.org/?p=rockbox.git"/></t>

+  <t><eref target="http://gerrit.rockbox.org/r/#/c/300/"/></t>

 </list></t>

 </section>