start_sound_input - Starts recording in the specified format. Allegro game programming library.

       Starts  recording in the specified format, suspending audio playback as necessary if the card is not full
       duplex.

       start_sound_input - Starts recording in the specified format. Allegro game programming library.

       Returns the buffer size in bytes if successful, or zero on error.

install_sound_input(3alleg4),            read_sound_input(3alleg4),            stop_sound_input(3alleg4),
       digi_recorder(3alleg4),        set_sound_input_source(3alleg4),        get_sound_input_cap_parm(3alleg4),
       get_sound_input_cap_bits(3alleg4), get_sound_input_cap_rate(3alleg4), get_sound_input_cap_stereo(3alleg4)

Allegro                                           version 4.4.3                       start_sound_input(3alleg4)

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