commandline pipeline launched via gst-launch VS programmatic pipeline

[Icarus Alive]

Are there are performance comparisons available for the 2 approaches,
where the same logical pipeline is created via commandline & launched
via gst-launch, versus a programmatically coded pipeline, all C code ?

Or,

What are the factors which make the command-line pipeline slower than
an all-C application program representing same pipeline ?
I am thinking in terms of "parsing" the pipeline (but then, I believe
it is a one-time task).
Is there any way that a command-line pipeline can be converted to it's
C-language pipeline, automagically (code-generation) ?


Icarus.