/*
* Pass raw PCM data to generate a signature.
*
* Note: MusicBrainz::TRM#pcm_data must be called before this function.
*
* Returns true if enough data has been sent to generate a signature,
* and false if more data is needed.
*
* Example:
* trm.generate_signature buf, BUFSIZ
*
*/
static VALUE mb_trm_gen_sig(VALUE self, VALUE buf) {