[gstreamer-bugs] [Bug 520300] New: [alsasrc] provide-clock=false messes up buffer durations

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS
           Summary: [alsasrc] provide-clock=false messes up buffer durations
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: mail at renestadler.de
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


This outputs some funny buffer durations:

gst-launch-0.10 -v alsasrc provide-clock=false ! fakesink

...

/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.018047808, duration: 0:00:00.00326738
4, offset: 0, offset_end: 940, flags: 32) 0x8197a80"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.039414808, duration: 0:00:00.00321557
7, offset: 940, offset_end: 1880, flags: 0) 0x8197ad0"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.060690808, duration: 0:00:00.00325477
0, offset: 1880, offset_end: 2820, flags: 0) 0x8197b20"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.082106808, duration: 0:00:00.00315396
2, offset: 2820, offset_end: 3760, flags: 0) 0x8197b70"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.124777808, duration: 5124095:34:33.69
1349771, offset: 3760, offset_end: 4700, flags: 0) 0x819e820"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.124881808, duration: 0:00:00.00300934
8, offset: 4700, offset_end: 5640, flags: 0) 0x819e870"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.167540808, duration: 5124095:34:33.69
1217157, offset: 5640, offset_end: 6580, flags: 0) 0x819e8c0"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.167631808, duration: 0:00:00.00288973
3, offset: 6580, offset_end: 7520, flags: 0) 0x819e910"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.210081808, duration: 5124095:34:33.69
1306542, offset: 7520, offset_end: 8460, flags: 0) 0x819e960"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.210163808, duration: 0:00:00.00298811
9, offset: 8460, offset_end: 9400, flags: 0) 0x819e9b0"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:00.231378808, duration: 0:00:00.00308831
2, offset: 9400, offset_end: 10340, flags: 0) 0x819ea00"


Broken duration values like 5124095:34:33.69 keep popping up.  Also, the
duration seems to decrease over time.  When they reach almost 0, only values
very close to 5124095:34:33.688102923 and 5124095:34:33.709365730 appear:

/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.580915808, duration: 5124095:34:33.688272996, offset:
156040, offset_end: 156980, flags: 0) 0x819eb40"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.581023808, duration: 5124095:34:33.709480188, offset:
156980, offset_end: 157920, flags: 0) 0x819eb90"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.623544808, duration: 5124095:34:33.688274381, offset:
157920, offset_end: 158860, flags: 0) 0x819ec00"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.623646808, duration: 5124095:34:33.709487574, offset:
158860, offset_end: 159800, flags: 0) 0x819ec50"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.666242808, duration: 5124095:34:33.688206767, offset:
159800, offset_end: 160740, flags: 0) 0x819eca0"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.666396808, duration: 5124095:34:33.709367959, offset:
160740, offset_end: 161680, flags: 0) 0x819ecf0"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.708885808, duration: 5124095:34:33.688194152, offset:
161680, offset_end: 162620, flags: 0) 0x819eca0"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.709002808, duration: 5124095:34:33.709392345, offset:
162620, offset_end: 163560, flags: 0) 0x819ec50"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.751543808, duration: 5124095:34:33.688166538, offset:
163560, offset_end: 164500, flags: 0) 0x819ec00"
/pipeline0/fakesink0: last-message = "chain   ******* < ( 7520 bytes,
timestamp: 0:00:03.751659808, duration: 5124095:34:33.709365730, offset:
164500, offset_end: 165440, flags: 0) 0x819eb90"


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