decorate_stream_id_printf_valist
Description:
public string decorate_stream_id_printf_valist (string format, va_list var_args)
Creates a stream-id for this by combining the upstream information with the format.
This function generates an unique stream-id by getting the upstream stream-start event stream ID and appending format to it. If
the element has no sinkpad it will generate an upstream stream-id by doing an URI query on the element and in the worst case just uses a random
number. Source elements that don't implement the URI handler interface should ideally generate a unique, deterministic stream-id manually
instead.
Since stream IDs are sorted alphabetically, any numbers in the stream ID should be printed with a fixed number of characters, preceded by 0's, such as by using the format \%03u instead of \%u.
Parameters:
| this |
The Element to create a stream-id for |
| format |
The stream-id |
| var_args |
parameters for the |
Returns:
|
A stream-id for this. |