[Bug 744922] New: osxaudiosrc: iOS resampling is stuttering

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Sat Feb 21 18:02:03 PST 2015


            Bug ID: 744922
           Summary: osxaudiosrc: iOS resampling is stuttering
    Classification: Platform
           Product: GStreamer
           Version: 1.4.5
                OS: Mac OS
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: ilya.konstantinov at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

This issue is best exhibited by configuring AVAudioSession to a sample rate
other than 44100, i.e.:

  [[AVAudioSession sharedInstance] setSampleRate:48000 error:nil]

This will cause the hardware sample rate (48,000) to be different from the
osxaudiosrc sample rate (currently hardcoded to 44,100 due to bug 743758).

           +---------------+            +-------------+
           |   Remote IO   |            | osxaudiosrc |
 --48khz-->| input element |--44.1khz-->|   caps =    |--44.1khz-->
   input   |               |  output    |  rate:44100 |  src pad
   scope   +---------------+  scope     +-------------+

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