[Bug 704774] New: gstappsrc : add "queued-byte" action signal

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=704774
  GStreamer | gst-plugins-base | 1.x

           Summary: gstappsrc : add "queued-byte" action signal
    Classification: Platform
           Product: GStreamer
           Version: 1.x
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: changbok.chea at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=249982)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=249982)
add "queued-byte" action signal patch

when we configure custom bin via appsrc element, we can't get appsrc buffer's
queued bytes(remained size). Although appsrc has "need-data"and"enough-data"
signal about appbuffer control, we need appsrc buffer's remained size to check
total appsrc element pipeline's buffer percentage.
 this action signal("queued-byte") help to get appsrc buffer's remained size.
below code is example.

guint64 queuedSize = 0;

g_signal_emit_by_name(pAppSrcElement, "queued-byte", &queuedSize);

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