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Jack2
1.9.13
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#include <metadata.h>
Public Attributes | |
| const char * | key |
| const char * | data |
| const char * | type |
A single property (key:value pair).
Although there is no semantics imposed on metadata keys and values, it is much less useful to use it to associate highly structured data with a port (or client), since this then implies the need for some (presumably library-based) code to parse the structure and be able to use it.
The real goal of the metadata API is to be able to tag ports (and clients) with small amounts of data that is outside of the core JACK API but nevertheless useful.
Definition at line 35 of file JackMetadata.h.
| const char * jack_property_t::key |
The key of this property (URI string).
Definition at line 36 of file JackMetadata.h.
| const char * jack_property_t::data |
The property value (null-terminated string).
Definition at line 37 of file JackMetadata.h.
| const char * jack_property_t::type |
Type of data, either a MIME type or URI.
If type is NULL or empty, the data is assumed to be a UTF-8 encoded string (text/plain). The data is a null-terminated string regardless of type, so values can always be copied, but clients should not try to interpret values of an unknown type.
Example values:
Official types are preferred, but clients may use any syntactically valid MIME type (which start with a type and slash, like "text/..."). If a URI type is used, it must be a complete absolute URI (which start with a scheme and colon, like "http:").
Definition at line 38 of file JackMetadata.h.
1.8.6