[gst-devel] Tag & Metainfo

[francois.visconte]

Benjamin Otte wrote:

>On Tue, 24 Aug 2004, Ronald Bultje wrote:
>
>  
>
>>Hi,
>>
>>On Sun, 22 Aug 2004, francois.visconte wrote:
>>    
>>
>>>I'm developping a kind of player and i would like to use gstreamer for
>>>playback. Reading documentation i have discovered that gstreamer offer
>>>tag metadata information backend.
>>>It seem to be a recent feature of gstreamer so i would like to know if
>>>this interface
>>>is usable for most usable format (mp3, ogg, flac) for now
>>>      
>>>
>>Yes. RB uses it in some sort of following fashion:
>>
>>    
>>
>That part is correct. Rhythmbox uses it for reading tags and it works
>without problems for at least mp3 and ogg. People told me that flac and
>windows media work fine, too.
>
>  
>
I'm using rythmbox (0.8.99, tla version) and gstreamer-plugins  0.8.3
and my rythmbox crash on tag reading of a wma file. I tryed to launch this
"src ! spider ! audio/x-raw-int ! fakesink" on my wma file with 
gstreamer 0.8
and it cause gstreamer  to crash too.
(for info , gstreamer crach on gst_tag_list_get_tag_size (list, tag); 
when trying to read
the "comment" tag of the wma file (http://kh3.org/~fv/1.wma)

>>1. set up a pipeline "filesrc location=X ! application/x-gst-metadata !
>>fakesink"
>>2. wait for the "have-tag" signal
>>3. cycle 1-2 for all your files
>>
>>    
>>
>That part is wrong and was only correct during the last development
>series where we experimented with that approach.
>The current approach does it like this:
>1. Setup a pipeline like this: src ! spider ! audio/x-raw-int ! fakesink
>2. Connect to fakesink's handoff signal (and set the "signal-handoffs"a
>property to TRUE)
>3. Connect to the pipeline's "have-tag" signal
>4. Iterate until fakesink gets data or you get an error. Collect all tags
>while doing this.
>
>
>Benjamin
>
>
>
>  
>