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http://dev.sourcefabric.org/browse/LS-510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15796#action_15796
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David Baelde commented on LS-510:
---------------------------------
This sounds good to me. It seems natural to split them in two as you propose.
The pre-processing tasks should be accumulated and only applied after that the
usual resolution steps are done. That being said there are some difficulties.
First, the pre-processing needs to be parsed before being accumulated/delayed.
For example, suppose annotate was treated as a pre-processor: we still need to
run the parser that is specific to annotate to analyze
annotate:foo="bar":http://bla/blah and extract http://bla/blah. It's no big
deal, we just need to separate parsing from execution, at least for
pre-processors.
I think there were also some things to clarify regarding temporary files, and
whether pre-processors can work destructively on a file.
Finally, will all this be available nicely through the scriping interface?
> Three-stage request preparation
> -------------------------------
>
> Key: LS-510
> URL: http://dev.sourcefabric.org/browse/LS-510
> Project: Liquidsoap
> Issue Type: New Feature
> Components: Liquidsoap
> Affects Versions: 1.0
> Reporter: Romain Beauxis
> Priority: Major
> Fix For: NEAR FUTURE
>
>
> Requests resolution should be split in two:
> * Request resolution, possibly downloading an external file
> * Request pre-processing, including start/stop cut, audio and video filters
> etc..
> * Request preparation, mainly detecting the correct decoder.
> This would allow to integrate some protocols such as (not existing yet)
> start/stop cue points or replaygain metadata with distant files.
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