[Bug 664792] Staircase effect in M-JPEG over RTP with unaligned image dimensions..

Mon Dec 5 01:49:13 PST 2011

https://bugzilla.gnome.org/show_bug.cgi?id=664792
  GStreamer | gst-plugins-good | git

Sebastian Dröge <slomo> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |slomo at circular-chaos.org
         Resolution|                            |FIXED
   Target Milestone|HEAD                        |0.10.31

--- Comment #2 from Sebastian Dröge <slomo at circular-chaos.org> 2011-12-05 09:49:08 UTC ---
commit c090201ca59f4d16df8af7390472b5eebfa86cab
Author: Sebastian Rasmussen <sebrn at axis.com>
Date:   Thu Nov 24 13:58:01 2011 +0100

    rtpjpegpay: Ceil jpeg dimensions, instead of floor

    A JPEG image inside an RTP stream has a preceeding RFC2435 header that
    conveys width/height. The dimensions in this header are limited to be
    multiples of 8. Since JPEG uses an MCU of 8x8 pixels any image must
    already indirectly have image data dimensions that are rounded up in
    order to contain enough data to render the image. Therefore this fix
    safely rounds the image dimensions in the RFC2435 header up to the
    closest multiple of 8.

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