[gstreamer-bugs] [Bug 316801] New: new plugin: gst-fakefilter

[GStreamer (bugzilla.gnome.org)]

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 http://bugzilla.gnome.org/show_bug.cgi?id=316801
 GStreamer | gst-plugins | Ver: 0.8.x

           Summary: new plugin: gst-fakefilter
           Product: GStreamer
           Version: 0.8.x
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: jason at subterrific.net
         QAContact: gstreamer-bugs at lists.sourceforge.net
                CC: all-bugs at bugzilla.gnome.org


http://cornsyrup.org/~jason/gst-fakefilter.tar.gz

I'd like to see this plugin or at least the functionality included in gstreamer.
I use it for specialized applications which can't be or don't need to be their
own plugin such as audio fingerprinting and file hashing. I think it would also
be useful for prototyping plugins or testing algorithms before taking the time
to develop a full plugin.

Very over simplified example of usage:

pipeline = gst_parse_launch("filesrc ! fakefilter name=hash_filter ! asfdemux
name=tag ! fakesink");

hash_filter = gst_bin_get_by_name(GST_BIN(pipeline->pipeline), "hash_filter");

g_signal_connect(hash_filter, "chain", G_CALLBACK(filter_chain_cb), pipeline);

void filter_chain_cb(GstElement* filter, GstPad *srcpad, GstPad *sinkpad,
GstData *data, State *state)
{
    GstBuffer *buf = GST_BUFFER(data);
    sha1_update(&state->sha1_ctx, GST_BUFFER_DATA(buf), GST_BUFFER_SIZE(buf));
}

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