[rtmpdump] [PATCH] Callback API

Adam Malcontenti-Wilson adman.com at gmail.com
Mon Jan 9 07:43:57 CET 2012

Looks good, I especially like the documentation comment.
One thing that wasn't immediately obvious to me was the code
"RTMPCallbackNode *callbacks[4];" and why there were four, until I
looked at the rest of the code. Might I suggest defining a
RTMP_NUM_CALLBACK_TYPES or similar that gets used there both for
extendability as well as making it obvious to people reading the code
(like me). Other than that nitpick, hopefully this patch can get

On Mon, Jan 9, 2012 at 3:53 AM, Antti Ajanki <antti.ajanki at iki.fi> wrote:
> The attached patch adds a callback interface for overriding (parts of) the
> RTMP packet processing. This is based on Chris Larsen's and Adam
> Malcontenti-Wilson's patches from last Fall.
> This is useful for implementing custom CDN authentication. My other
> motivation is implementing remote procedure calls over RTMP in the open
> source Flash player Lightspark, where a callback could be used to capture
> incoming RPC packets and execute the corresponding functions on Lightspark's
> virtual machine.
> The patch actually adds different callbacks on various levels of generality.
> RTMP_CALLBACK_PACKET callbacks can be used to completely override RTMP
> packet handling. Then there are more restricted callbacks, which only apply
> to some particular types of packets but, on the other hand, avoid much of
> the RTMP body parsing because that can be left to librtmp. See the comments
> in rtmp.h for details on different types of callbacks.
> Antti
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Adam Malcontenti-Wilson

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