typedef struct pa_pdispatch pa_pdispatch;
typedef void (*pa_pdispatch_cb_t)(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
typedef struct pa_pdispatch pa_pdispatch;
typedef void (*pa_pdispatch_cb_t)(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);