[vlc-devel] Access input or vout threads from decoder

[Alex Vazquez]

2007/9/1, Antoine Cellerier <dionoea at videolan.org>:
>
> On Thu, Aug 30, 2007, Alex Vazquez wrote:
> >    Could anyone tell me what's the prefered method to get a reference to
> the
> >    input_thread_t instance from inside a decoder plugin? Or at least
> give me
> >    any other way of getting the name of the input im decoding?
> >
> >    In the same way, i would like to access the vout_thread_t associated
> to
> >    the decoder, how can i do if i can?
> >
> >    I know that vlc_object_find( p_this, VLC_OBJECT_VOUT, int i_mode )
> can
> >    return a instance of a vout_thread_t, but what one it will return if
> there
> >    are several? Does i_mode=FIND_CHILD or i_mode=FIND_PARENT assure that
> we
> >    get the vout associated to this decoder?
>
> FIND_PARENT would work to get the input_thread_t instance from the
> decoder. For the vout you could use FIND_CHILD on the input_thread
> object or the video decoder object.
>
> (This is the module tree I get here when decoding an audio file:
> tree 1
> 00000001 libvlc "lt-vlc", refcount 1, 5 children
> |-o 00000316 playlist (thread 3049118608), refcount 2, 3 children, parent
> 1
> | |-o 00000337 generic (thread 3071503248), parent 316
> | |-o 00000338 generic (thread 3057507216), parent 316
> | `-o 00000345 input (thread 3023952784), refcount 2, 4 children, parent
> 316
> |   |-o 00000348 access "access_file", 1 child, parent 345
> |   | `-o 00000350 stream, parent 348
> |   |-o 00000351 demux "ps", parent 345
> |   |-o 00000389 decoder "libmpeg2" (thread 3000982416), 2 children,
> parent 345
> |   | |-o 00000400 video output "xvideo" (thread 2981739408), 1 child,
> parent 389
> |   | | `-o 00000401 subpicture, 2 children, parent 400
> |   | |   |-o 00000413 filter "blend", parent 401
> |   | |   `-o 00000415 filter "freetype" (thread 2962766736), parent 401
> |   | `-o 00000403 generic, parent 389
> |   `-o 00000393 decoder "mpeg_audio" (thread 2991410064), parent 345
> |-o 00000339 interface "hotkeys" (thread 3040730000), parent 1
> |-o 00000341 interface "screensaver" (thread 3032341392), parent 1
> |-o 00000343 interface "rc", parent 1
> `-o 00000404 audio output "alsa" (thread 2972203920), 2 children, parent 1
>    |-o 00000406 generic "mpgatofixed32", parent 404
>    `-o 00000409 generic "bandlimited_resampler", parent 404
> )
>
> --
> Antoine Cellerier
> dionoea
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Thank you very much Antoine,
that definitely shed some light on it


-- 
Alejandro Vazquez Fente
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