Return the sink input resp.\ source output index this stream is
* identified in the server with. This is useful with the
* introspection functions such as pa_context_get_sink_input_info()
* or pa_context_get_source_output_info(). This returns PA_INVALID_INDEX
* on failure.
Return the sink input resp.\ source output index this stream is * identified in the server with. This is useful with the * introspection functions such as pa_context_get_sink_input_info() * or pa_context_get_source_output_info(). This returns PA_INVALID_INDEX * on failure.