[asterisk-bugs] [JIRA] (ASTERISK-21333) Bridge API Enhancements - refactor all uses of a jitter buffer to use func_jitterbuffer

[Jonathan Rose (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-21333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Rose closed ASTERISK-21333.
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    Resolution: Fixed
    
> Bridge API Enhancements - refactor all uses of a jitter buffer to use func_jitterbuffer
> ---------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21333
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21333
>             Project: Asterisk
>          Issue Type: New Feature
>          Components: Core/Bridging
>            Reporter: Matt Jordan
>            Assignee: Jonathan Rose
>              Labels: Asterisk12
>      Target Release: 12
>
>
> Please see the [Bridge Construction|http://svn.asterisk.org/svn/asterisk/team/group/bridge_construction/] Team project for the current status of this work.
> Previously, when two channels were in a bridge, the bridging code explicitly would use the jitter buffers set up on a channel. When a frame was read from a channel, if the outbound channel had a jitter buffer, the frame was written into the jitter buffer. This has several drawbacks:
> # The jitter buffer code was integrated tightly into the bridging code
> # The jitter buffers were placed on the 'wrong side' of a channel. De-jittering makes the most sense on the read side of a channel, before the frames are put into the Asterisk core.
> In Asterisk 10, {{func_jitterbuffer}} was added that puts the jitter buffer on a channel as a frame hook. This puts it on the read side of a channel and does so in a dynamic fashion.
> This task is to migrate all use of jitter buffers over to use {{func_jitterbuffer}}. This entails:
> * All channel drivers that create a jitter buffer explicitly should, when they call the set up jitter buffer function and enable a jitter buffer, automatically put a {{func_jitterbuffer}} on the channel (if {{func_jitterbuffer}} is loaded)
> * {{func_jitterbuffer}} needs to be modified to handle SRCUPDATE/SRCCHANGE control frames. These should resync the jitter buffer automatically (this was currently handled by the bridging code)
> * The various API calls that the bridging layer was explicitly calling should be removed.

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