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rtpbin: add a caps accumulator for the request-pt-map signal

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Add an accumulator that stops the signal emission as soon as a caps has
been retrieved. Otherwise the default handler would continue emitting
the signal and possibly overwrite the result with NULL again.
This commit is contained in:
Wim Taymans 2014-01-21 15:48:20 +01:00
parent ef20dfe031
commit ddb0b9c422
1 changed files with 18 additions and 2 deletions
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20
gst/rtpmanager/gstrtpbin.c
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@ -1675,6 +1675,22 @@ _gst_element_accumulator (GSignalInvocationHint * ihint,
return (element == NULL);
}
static gboolean
_gst_caps_accumulator (GSignalInvocationHint * ihint,
GValue * return_accu, const GValue * handler_return, gpointer dummy)
{
GstCaps *caps;
caps = g_value_get_boxed (handler_return);
GST_DEBUG ("got caps %" GST_PTR_FORMAT, caps);
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
g_value_set_boxed (return_accu, caps);
/* stop emission if we have a caps */
return (caps == NULL);
}
static void
gst_rtp_bin_class_init (GstRtpBinClass * klass)
{
@ -1716,8 +1732,8 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
gst_rtp_bin_signals[SIGNAL_REQUEST_PT_MAP] =
g_signal_new ("request-pt-map", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, request_pt_map),
NULL, NULL, g_cclosure_marshal_generic, GST_TYPE_CAPS, 2, G_TYPE_UINT,
G_TYPE_UINT);
_gst_caps_accumulator, NULL, g_cclosure_marshal_generic, GST_TYPE_CAPS,
2, G_TYPE_UINT, G_TYPE_UINT);
/**
* GstRtpBin::payload-type-change: