get_sound_input_cap_rate - Returns the maximum sample frequency for recording. Allegro game programming

       Returns the maximum possible sample frequency for recording in the specified format,  or  zero  if  these
       settings  are  not  supported.  The  bits  parameter  is the number of bits of the audio, and stereo is a
       boolean parameter. Pass zero for mono, non-zero for stereo input. Example:

          int max_freq;
          ...
          /* What frequency can we record 8 bits mono at? */
          max_freq = get_sound_input_cap_rate(8, 0);
          if (max_freq > 22000) {
             /* Ok, 22KHz and above is good enough. */
          }

       get_sound_input_cap_rate  -  Returns the maximum sample frequency for recording. Allegro game programming
       library.

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

Allegro                                           version 4.4.3                get_sound_input_cap_rate(3alleg4)

#include<allegro.h>intget_sound_input_cap_rate(intbits,intstereo);