/usr/include/allegro/sound.h is in liballegro4-dev 2:4.4.2-10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* /\ _ \ /\_ \ /\_ \
* \ \ \L\ \\//\ \ \//\ \ __ __ _ __ ___
* \ \ __ \ \ \ \ \ \ \ /'__`\ /'_ `\/\`'__\/ __`\
* \ \ \/\ \ \_\ \_ \_\ \_/\ __//\ \L\ \ \ \//\ \L\ \
* \ \_\ \_\/\____\/\____\ \____\ \____ \ \_\\ \____/
* \/_/\/_/\/____/\/____/\/____/\/___L\ \/_/ \/___/
* /\____/
* \_/__/
*
* Sound support routines.
*
* By Shawn Hargreaves.
*
* See readme.txt for copyright information.
*/
#ifndef ALLEGRO_SOUND_H
#define ALLEGRO_SOUND_H
#include "base.h"
#include "digi.h"
#include "stream.h"
#include "midi.h"
#ifdef __cplusplus
extern "C" {
#endif
AL_FUNC(void, reserve_voices, (int digi_voices, int midi_voices));
AL_FUNC(void, set_volume_per_voice, (int scale));
AL_FUNC(int, install_sound, (int digi, int midi, AL_CONST char *cfg_path));
AL_FUNC(void, remove_sound, (void));
AL_FUNC(int, install_sound_input, (int digi, int midi));
AL_FUNC(void, remove_sound_input, (void));
AL_FUNC(void, set_volume, (int digi_volume, int midi_volume));
AL_FUNC(void, set_hardware_volume, (int digi_volume, int midi_volume));
AL_FUNC(void, get_volume, (int *digi_volume, int *midi_volume));
AL_FUNC(void, get_hardware_volume, (int *digi_volume, int *midi_volume));
AL_FUNC(void, set_mixer_quality, (int quality));
AL_FUNC(int, get_mixer_quality, (void));
AL_FUNC(int, get_mixer_frequency, (void));
AL_FUNC(int, get_mixer_bits, (void));
AL_FUNC(int, get_mixer_channels, (void));
AL_FUNC(int, get_mixer_voices, (void));
AL_FUNC(int, get_mixer_buffer_length, (void));
#ifdef __cplusplus
}
#endif
#endif /* ifndef ALLEGRO_SOUND_H */
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