/*
 * Set the information of an audio stream to be signatured.
 *
 * Note: this MUST be called before attempting to generate a signature.
 *
 * samples: samples per second (Hz) of audio data (eg 44100)
 * channels: number of audio channels (eg 1 for mono, or two for stereo)
 * bits: bits per sample (eg 8 or 16)
 * 
 * Aliases:
 *   MusicBrainz::TRM#set_pcm_data
 *   MusicBrainz::TRM#pcm_data_info
 *   MusicBrainz::TRM#set_pcm_data_info
 *
 * Examples:
 *   # prepare for CD-quality audio
 *   samples, channels, bits = 44100, 2, 16
 *   trm.pcm_data samples, channels, bits
 *
 */
static VALUE mb_trm_set_pcm_data(VALUE self, VALUE samples, VALUE chans, VALUE bps) {