I've been implementing Ogg FLAC support in an editor I'm working on, and I must admit to being frustrated by the lack of support for the codec on the Ogg layer... and this is more than lacking granulepos.
The codec's I've worked with, and my own (Writ), use Page 0 for general information about the codec. Specifically, the samplerate, bitrate, quality, number of channels, all that jazz that end users may want to know. Codec setup is often in a second header page, etc. I have yet to fully grok where things have been mapped from the FLAC spec to where they actually are in an Ogg FLAC file. What I have seen is that this is not readily accessable in specifically marked Ogg headers, and this is also a hurdle to getting native support in Icecast for chaining FLAC with other codecs in a stream. Page 0 should really contain enough information to atleast preform granulepos -> time mapping and the codec version for future use. My recommendation, and my offer, is to redesign the "OggFLAC" stream and leave an easy compatability system in place for software that wants to support both older and newer OggFlac files. This will make adoption of FLAC alongside Theora, etc, much easier (and thus faster). This should be fully documented along with the rest of the FLAC format spec. I believe this transition should happen along with porting libOggFlac to libogg2, and would like to make this happen in the very near future. I would also like to put energy into helping complete the transition from sourceforge to Xiph servers, including transition from cvs to svn, now that motherfish-III is setup and our server situation has stabalized. btw, the app I'm working on: Xinloe - svn co http://svn.xiph.org/trunk/xinloe |. depends on: wxPython (most distros have this available) py-ogg2 - svn co http://svn.xiph.org/trunk/py-ogg2 |. depends on: libogg2 - svn co http://svn.xiph.org/branches/ogg2-arc (Note that my branch has api additions that allows py-ogg2 to compile, these should be merged with the trunk fairly soon) latest screenshot: http://westfish.xiph.org/~arc/Xinloe-07-29.png I would greatly appreciate any help in grokking the currently OggFLAC format as well as feedback on my ideas for improving it. ------------------------------------------------------- This SF.Net email is sponsored by OSTG. Have you noticed the changes on Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now, one more big change to announce. We are now OSTG- Open Source Technology Group. Come see the changes on the new OSTG site. www.ostg.com _______________________________________________ Flac-dev mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/flac-dev
