mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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bc621cc335
This adds gdb pretty printer for some GStreamer types. For GstObject pointers the type and name is added, e.g. "0x5555557e4110 [GstDecodeBin|decodebin0]". For GstMiniObject pointers the object type is added, e.g. "0x7fffe001fc50 [GstBuffer]". For GstClockTime and GstClockTimeDiff the time is also printed in human readable form, e.g. "150116219955 [+0:02:30.116219955]". Fixes #320
116 lines
3.3 KiB
Python
116 lines
3.3 KiB
Python
import gdb
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import sys
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import re
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from glib_gobject_helper import g_type_to_name, g_type_name_from_instance
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if sys.version_info[0] >= 3:
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long = int
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def is_gst_type (val, klass):
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def _is_gst_type (type):
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if str(type) == klass:
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return True
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while type.code == gdb.TYPE_CODE_TYPEDEF:
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type = type.target()
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if type.code != gdb.TYPE_CODE_STRUCT:
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return False
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fields = type.fields()
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if len (fields) < 1:
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return False
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first_field = fields[0]
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return _is_gst_type (first_field.type)
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type = val.type
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if type.code != gdb.TYPE_CODE_PTR:
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return False
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type = type.target()
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return _is_gst_type (type)
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class GstMiniObjectPrettyPrinter:
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"Prints a GstMiniObject instance pointer"
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def __init__ (self, val):
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self.val = val
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def to_string (self):
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try:
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inst = self.val.cast (gdb.lookup_type("GstMiniObject").pointer())
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gtype = inst["type"]
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name = g_type_to_name (gtype)
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return "0x%x [%s]" % (long(self.val), name)
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except RuntimeError:
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return "0x%x" % long(self.val)
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class GstObjectPrettyPrinter:
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"Prints a GstObject instance"
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def __init__ (self, val):
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self.val = val
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def to_string (self):
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try:
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name = g_type_name_from_instance (self.val)
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if not name:
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name = str(self.val.type.target())
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if long(self.val) != 0:
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inst = self.val.cast (gdb.lookup_type("GstObject").pointer())
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inst_name = inst["name"].string()
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if inst_name:
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name += "|" + inst_name
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return ("0x%x [%s]") % (long(self.val), name)
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except RuntimeError:
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return "0x%x" % long(self.val)
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class GstClockTimePrinter:
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"Prints a GstClockTime / GstClockTimeDiff"
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def __init__ (self, val):
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self.val = val
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def to_string (self):
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GST_SECOND = 1000000000
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GST_CLOCK_TIME_NONE = 2**64-1
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GST_CLOCK_STIME_NONE = -2**63
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n = int(self.val)
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prefix = ""
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invalid = False
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if str(self.val.type) == "GstClockTimeDiff":
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if n == GST_CLOCK_STIME_NONE:
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invalid = True
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prefix = "+" if n >= 0 else "-"
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n = abs(n)
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else:
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if n == GST_CLOCK_TIME_NONE:
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invalid = True
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if invalid:
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return str(n) + " [99:99:99.999999999]"
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return str(n) + " [%s%u:%02u:%02u.%09u]" % ( prefix,
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n / (GST_SECOND * 60 * 60),
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(n / (GST_SECOND * 60)) % 60,
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(n / GST_SECOND) % 60,
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n % GST_SECOND )
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def gst_pretty_printer_lookup (val):
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if is_gst_type (val, "GstMiniObject"):
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return GstMiniObjectPrettyPrinter (val)
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if is_gst_type (val, "GstObject"):
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return GstObjectPrettyPrinter (val)
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if str(val.type) == "GstClockTime" or str(val.type) == "GstClockTimeDiff":
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return GstClockTimePrinter (val)
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return None
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def register (obj):
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if obj == None:
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obj = gdb
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# Make sure this is always used befor the glib lookup function.
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# Otherwise the gobject pretty printer is used for GstObjects
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obj.pretty_printers.insert(0, gst_pretty_printer_lookup)
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