read_sound_input
Section: Allegro manual (3)
Updated: version 4.2.2
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NAME
read_sound_input - Retrieves the last recorded audio buffer. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int read_sound_input(void *buffer);
DESCRIPTION
Retrieves the most recently recorded audio buffer into the specified
location. The buffer size can be obtained by checking the return value
from start_sound_input(). You must be sure to call this
function at regular intervals during the recording (typically around 100
times a second), or some data will be lost. If you are unable to do this
often enough from the mainline code, use the digi_recorder() callback to
store the waveform into a larger buffer of your own.
Note: many cards produce a click or popping sound when switching between
record and playback modes, so it is often a good idea to discard the
first buffer after you start a recording. The waveform is always stored
in unsigned format, with stereo data consisting of alternate left/right
samples.
RETURN VALUE
The function will return non-zero if a buffer has been copied or zero if
no new data is yet available (you were too fast checking the input).
SEE ALSO
start_sound_input(3)