RE: [gupnp] How to use gupnp-av-cp with Images and/or Videos

[John Frankish <j-frankish slb com>]

> -----Original Message-----
> From: Jens Georg [mailto:mail jensge org]
> Sent: Thursday, 14 October, 2010 13:00
> To: gupnp o-hand com
> Subject: RE: [gupnp] How to use gupnp-av-cp with Images and/or Videos
> 
> On Thu, 2010-10-14 at 07:29 +0000, John Frankish wrote:
> > 
> > Using rygel's renderer and by trying to play a test mp4 video with
> > gupnp-av-cp, failing, adding software packages, trying again, etc - I
> > finally managed to play a test mp4 video, though I cannot say which
> > particular combination of software enabled this to work...
> >
> > So now I can use gupnp-av-cp to play mp3 and watch mp4 streamed by
> > rygel using rygel's renderer, but I cannot view jpeg or png images
> >
> > Apart from libjpeg/libpng, what would be required to view image
> > files, is there any way to get rygel/gupnp-av-cp to display what it is
> > missing to render the files? "rygel --log-level=5" doesn't help and
> > gupnp-av-cp doesn't appear to have a debug mode
> 
> The renderer doesn't announce support for images IIRC.
> 
From this, I interpret that the problem is with gstreamer rather than gupnp-av-cp/rygel?

$ gst-launch filesrc location=file.jpg ! jpegdec ! freeze ! autovideosink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstJpegDec:jpegdec0: Failed to decode JPEG image
Additional debug info:
gstjpegdec.c(1441): gst_jpeg_dec_chain (): /GstPipeline:pipeline0/GstJpegDec:jpegdec0:
Error #68: Unsupported marker type 0x03
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...

$ gst-launch filesrc location=file.png ! pngdec ! freeze ! autovideosink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstPngDec:pngdec0: Internal data stream error.
Additional debug info:
gstpngdec.c(550): gst_pngdec_task (): /GstPipeline:pipeline0/GstPngDec:pngdec0:
stream stopped, reason not-negotiated
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...