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    • Edward Hervey's avatar
      vorbisdec: Improve "new headers while initialized" handling · 865209d3
      Edward Hervey authored and Edward Hervey's avatar Edward Hervey committed
      If new headers arrive after we are initialized, we need to make
      sure that they are indeed valid.
      
      A vorbis bitstream always begins with three header packets and must
      be in order.
      
      Also some streams have unframed (invalid?) headers that might
      confuse and disrupt the decoding process.
      
      Therefore if ever we see new headers, we accumulate them and once
      we get a non-header packet we check them to make sure that:
      * We have at least 3 headers
      * They are the expected ones (identification, comments and setup)
      * They are in order
      * Any other "header" is ignored
      
      If those conditions are met, we reset and reconfigure the decoder
      
      https://bugzilla.gnome.org/show_bug.cgi?id=784530
      865209d3
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