snd_wavefront_mpu_id output_mpu; /* most-recently-used */
snd_wavefront_mpu_id input_mpu; /* most-recently-used */
unsigned int mode[2]; /* MPU401_MODE_XXX */
snd_wavefront_mpu_id output_mpu; /* most-recently-used */
snd_wavefront_mpu_id input_mpu; /* most-recently-used */
unsigned int mode[2]; /* MPU401_MODE_XXX */