Re: [Jack-Devel] Any plans for meta-data API in jack2?

On Sunday 15 December 2013 23:43:42 Filipe Coelho wrote:
> > you could probably recycle at least a bit from JACK iOS for that.
> 
> I know, I already made that work with raw JACK2 previously (no iOS code
> needed).

Perfect!

> I believe the meta-data API was quickly added after I posted that
> message in fear it would be accepted in JACK2. Paul was really not a fan
> of that custom-data version... ;)

Oh reeeally, I didn't notice that.. ;-)

The custom data API stuff was a quick shot for iOS anyway. We just needed an 
extension for app/client icons. Actually I just wanted to add something like 
this:

    /// Defines exactly one pixel (32 bits) with alpha (translucency) channel.
    struct JackRGBA {
        char r; ///< Red component.
        char g; ///< Green component.
        char b; ///< Blue component.
        char a; ///< Alpha (translucency) component.
    } __attribute__ (packed);

    /// A picture in raw format (32 bit RGBA).
    struct JackRGBAImage {
        JackRGBA** data; ///< Accessed like foo.data[y][x];
        int w; ///< Width in pixels.
        int h; ///< Height in pixels.
    };

    /// Get icon of another JACK client, auto scaled to required size.
    JackRGBAImage* jack_get_client_icon(jack_client_t* client,
                                        const char* client_name,
                                        int preferred_icon_width);

    /// Register an icon for own JACK client.
    int jack_publish_icon(jack_client_t* client, const JackRGBAImage* icon);

    ...

But it was immediately rejected by Stephane and Paul with the words "Pictures 
in the JACK API??? I think the sky is falling!". :-)

Anyhow, ... guess we soon have the meta data API in JACK2 as well. Looking 
forward to your patch Filipe!

CU
Christian

1387196603.20485_0.ltw:2, <201312161331.11685.schoenebeck at crudebyte dot com>