From: Andy W. <wi...@po...> - 2004-03-16 13:54:24
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On Wed, 2004-03-10 at 21:58, David Schleef wrote: > On Wed, Mar 10, 2004 at 04:37:35PM +0100, Benjamin Otte wrote: > > I'd like to have gst_pad_can_link_filtered as a function that I can throw any > > two pads at and see if they can connect without having to think about them any > > more. > > Keep in mind that it's not possible to properly test whether two pads > can be linked without actually linking them. It will always be that way. In general, you don't know if calling a pad's link function will be successful. However, if you test your app and know what a specific plugin is going to do, you can call gst_pad_link without can_link and be sure of the results. If you don't know anything about the plugin or the pads or the network, you need to test before linking. For that reason, > Most application code does not check gst_pad_can_link() before linking > pads. It's rather silly to have to check if you can do something > before doing something Most code that actually checks the retval does a g_assert (or the like) on it. If you want to query, use the query function. However, if you already know structurally and historically that it is a valid link, you just call gst_pad_link. Regards, -- Andy Wingo <wi...@po...> |