get_sound_input_cap_bits - Checks which audio input sample formats are supported. Allegro game

       Checks which sample formats are supported by the  current  audio  input  driver,  returning  one  of  the
       bitfield values:

          0 = audio input not supported
          8 = eight bit audio input is supported
          16 = sixteen bit audio input is supported
          24 = both eight and sixteen bit audio input are supported
       Example:

          cap = get_sound_input_cap_bits();
          if (cap == 0) {
             /* Ugh, no audio input supported? */
          } else {
             if (cap & 8) {
                /* We have eight bit audio input. */
             }
             if (cap & 16) {
                /* We have sixteen bit audio input. */
             }
          }

       get_sound_input_cap_bits  -  Checks  which  audio  input  sample  formats  are  supported.  Allegro  game
       programming library.

start_sound_input(3alleg4),     get_sound_input_cap_parm(3alleg4),     get_sound_input_cap_rate(3alleg4),
       get_sound_input_cap_stereo(3alleg4)

Allegro                                           version 4.4.3                get_sound_input_cap_bits(3alleg4)

#include<allegro.h>intget_sound_input_cap_bits();