Commit ebce5a7e authored by Michael Olbrich's avatar Michael Olbrich Committed by Tim-Philipp Müller

gdb: add gst_pipeline() and gst_bin_get() functions

This simplifies navigating in a GStreamer pipeline, e.g.

(gdb) print $gst_bin_get($gst_pipeline(pad), "matroskademux0")
$1 = 0x7fffe81b4050 [GstMatroskaDemux|matroskademux0]
parent 8ccb9f25
......@@ -1053,6 +1053,58 @@ GstDot()
GstPrint()
class GstPipeline(gdb.Function):
"""\
Find the top-level pipeline for the given element"""
def __init__(self):
super(GstPipeline, self).__init__("gst_pipeline")
def invoke(self, arg):
value = gst_object_from_value(arg)
return gst_object_pipeline(value)
class GstBinGet(gdb.Function):
"""\
Find a child element with the given name"""
def __init__(self):
super(GstBinGet, self).__init__("gst_bin_get")
def find(self, obj, name, recurse):
for child in obj.children():
if child.name() == name:
return child.val
if recurse:
result = self.find(child, name, recurse)
if result is not None:
return result
def invoke(self, element, arg):
value = gst_object_from_value(element)
if not g_inherits_type(value, "GstElement"):
raise Exception("'%s' is not a GstElement" %
str(value.address))
try:
name = arg.string()
except gdb.error:
raise Exception("Usage: $gst_bin_get(<gst-object>, \"<name>\")")
obj = GdbGstElement(value)
child = self.find(obj, name, False)
if child is None:
child = self.find(obj, name, True)
if child is None:
raise Exception("No child named '%s' found." % name)
return child
GstPipeline()
GstBinGet()
def register(obj):
if obj is None:
obj = gdb
......
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