/usr/include/allegro/digi.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\ \/_/ \/___/
* /\____/
* \_/__/
*
* Digital sound routines.
*
* By Shawn Hargreaves.
*
* See readme.txt for copyright information.
*/
#ifndef ALLEGRO_DIGI_H
#define ALLEGRO_DIGI_H
#include "base.h"
#ifdef __cplusplus
extern "C" {
#endif
struct PACKFILE;
#define DIGI_VOICES 64 /* Theoretical maximums: */
/* actual drivers may not be */
/* able to handle this many */
typedef struct SAMPLE /* a sample */
{
int bits; /* 8 or 16 */
int stereo; /* sample type flag */
int freq; /* sample frequency */
int priority; /* 0-255 */
unsigned long len; /* length (in samples) */
unsigned long loop_start; /* loop start position */
unsigned long loop_end; /* loop finish position */
unsigned long param; /* for internal use by the driver */
void *data; /* sample data */
} SAMPLE;
#define DIGI_AUTODETECT -1 /* for passing to install_sound() */
#define DIGI_NONE 0
typedef struct DIGI_DRIVER /* driver for playing digital sfx */
{
int id; /* driver ID code */
AL_CONST char *name; /* driver name */
AL_CONST char *desc; /* description string */
AL_CONST char *ascii_name; /* ASCII format name string */
int voices; /* available voices */
int basevoice; /* voice number offset */
int max_voices; /* maximum voices we can support */
int def_voices; /* default number of voices to use */
/* setup routines */
AL_METHOD(int, detect, (int input));
AL_METHOD(int, init, (int input, int voices));
AL_METHOD(void, exit, (int input));
AL_METHOD(int, set_mixer_volume, (int volume));
AL_METHOD(int, get_mixer_volume, (void));
/* for use by the audiostream functions */
AL_METHOD(void *, lock_voice, (int voice, int start, int end));
AL_METHOD(void, unlock_voice, (int voice));
AL_METHOD(int, buffer_size, (void));
/* voice control functions */
AL_METHOD(void, init_voice, (int voice, AL_CONST SAMPLE *sample));
AL_METHOD(void, release_voice, (int voice));
AL_METHOD(void, start_voice, (int voice));
AL_METHOD(void, stop_voice, (int voice));
AL_METHOD(void, loop_voice, (int voice, int playmode));
/* position control functions */
AL_METHOD(int, get_position, (int voice));
AL_METHOD(void, set_position, (int voice, int position));
/* volume control functions */
AL_METHOD(int, get_volume, (int voice));
AL_METHOD(void, set_volume, (int voice, int volume));
AL_METHOD(void, ramp_volume, (int voice, int tyme, int endvol));
AL_METHOD(void, stop_volume_ramp, (int voice));
/* pitch control functions */
AL_METHOD(int, get_frequency, (int voice));
AL_METHOD(void, set_frequency, (int voice, int frequency));
AL_METHOD(void, sweep_frequency, (int voice, int tyme, int endfreq));
AL_METHOD(void, stop_frequency_sweep, (int voice));
/* pan control functions */
AL_METHOD(int, get_pan, (int voice));
AL_METHOD(void, set_pan, (int voice, int pan));
AL_METHOD(void, sweep_pan, (int voice, int tyme, int endpan));
AL_METHOD(void, stop_pan_sweep, (int voice));
/* effect control functions */
AL_METHOD(void, set_echo, (int voice, int strength, int delay));
AL_METHOD(void, set_tremolo, (int voice, int rate, int depth));
AL_METHOD(void, set_vibrato, (int voice, int rate, int depth));
/* input functions */
int rec_cap_bits;
int rec_cap_stereo;
AL_METHOD(int, rec_cap_rate, (int bits, int stereo));
AL_METHOD(int, rec_cap_parm, (int rate, int bits, int stereo));
AL_METHOD(int, rec_source, (int source));
AL_METHOD(int, rec_start, (int rate, int bits, int stereo));
AL_METHOD(void, rec_stop, (void));
AL_METHOD(int, rec_read, (void *buf));
} DIGI_DRIVER;
AL_ARRAY(_DRIVER_INFO, _digi_driver_list);
/* macros for constructing the driver lists */
#define BEGIN_DIGI_DRIVER_LIST \
_DRIVER_INFO _digi_driver_list[] = \
{
#define END_DIGI_DRIVER_LIST \
{ 0, NULL, 0 } \
};
AL_VAR(DIGI_DRIVER *, digi_driver);
AL_VAR(DIGI_DRIVER *, digi_input_driver);
AL_VAR(int, digi_card);
AL_VAR(int, digi_input_card);
AL_FUNC(int, detect_digi_driver, (int driver_id));
AL_FUNC(SAMPLE *, load_sample, (AL_CONST char *filename));
AL_FUNC(SAMPLE *, load_wav, (AL_CONST char *filename));
AL_FUNC(SAMPLE *, load_wav_pf, (struct PACKFILE *f));
AL_FUNC(SAMPLE *, load_voc, (AL_CONST char *filename));
AL_FUNC(SAMPLE *, load_voc_pf, (struct PACKFILE *f));
AL_FUNC(int, save_sample, (AL_CONST char *filename, SAMPLE *spl));
AL_FUNC(SAMPLE *, create_sample, (int bits, int stereo, int freq, int len));
AL_FUNC(void, destroy_sample, (SAMPLE *spl));
AL_FUNC(int, play_sample, (AL_CONST SAMPLE *spl, int vol, int pan, int freq, int loop));
AL_FUNC(void, stop_sample, (AL_CONST SAMPLE *spl));
AL_FUNC(void, adjust_sample, (AL_CONST SAMPLE *spl, int vol, int pan, int freq, int loop));
AL_FUNC(int, allocate_voice, (AL_CONST SAMPLE *spl));
AL_FUNC(void, deallocate_voice, (int voice));
AL_FUNC(void, reallocate_voice, (int voice, AL_CONST SAMPLE *spl));
AL_FUNC(void, release_voice, (int voice));
AL_FUNC(void, voice_start, (int voice));
AL_FUNC(void, voice_stop, (int voice));
AL_FUNC(void, voice_set_priority, (int voice, int priority));
AL_FUNC(SAMPLE *, voice_check, (int voice));
#define PLAYMODE_PLAY 0
#define PLAYMODE_LOOP 1
#define PLAYMODE_FORWARD 0
#define PLAYMODE_BACKWARD 2
#define PLAYMODE_BIDIR 4
AL_FUNC(void, voice_set_playmode, (int voice, int playmode));
AL_FUNC(int, voice_get_position, (int voice));
AL_FUNC(void, voice_set_position, (int voice, int position));
AL_FUNC(int, voice_get_volume, (int voice));
AL_FUNC(void, voice_set_volume, (int voice, int volume));
AL_FUNC(void, voice_ramp_volume, (int voice, int tyme, int endvol));
AL_FUNC(void, voice_stop_volumeramp, (int voice));
AL_FUNC(int, voice_get_frequency, (int voice));
AL_FUNC(void, voice_set_frequency, (int voice, int frequency));
AL_FUNC(void, voice_sweep_frequency, (int voice, int tyme, int endfreq));
AL_FUNC(void, voice_stop_frequency_sweep, (int voice));
AL_FUNC(int, voice_get_pan, (int voice));
AL_FUNC(void, voice_set_pan, (int voice, int pan));
AL_FUNC(void, voice_sweep_pan, (int voice, int tyme, int endpan));
AL_FUNC(void, voice_stop_pan_sweep, (int voice));
AL_FUNC(void, voice_set_echo, (int voice, int strength, int delay));
AL_FUNC(void, voice_set_tremolo, (int voice, int rate, int depth));
AL_FUNC(void, voice_set_vibrato, (int voice, int rate, int depth));
#define SOUND_INPUT_MIC 1
#define SOUND_INPUT_LINE 2
#define SOUND_INPUT_CD 3
AL_FUNC(int, get_sound_input_cap_bits, (void));
AL_FUNC(int, get_sound_input_cap_stereo, (void));
AL_FUNC(int, get_sound_input_cap_rate, (int bits, int stereo));
AL_FUNC(int, get_sound_input_cap_parm, (int rate, int bits, int stereo));
AL_FUNC(int, set_sound_input_source, (int source));
AL_FUNC(int, start_sound_input, (int rate, int bits, int stereo));
AL_FUNC(void, stop_sound_input, (void));
AL_FUNC(int, read_sound_input, (void *buffer));
AL_FUNCPTR(void, digi_recorder, (void));
AL_FUNC(void, lock_sample, (struct SAMPLE *spl));
AL_FUNC(void, register_sample_file_type, (AL_CONST char *ext, AL_METHOD(struct SAMPLE *, load, (AL_CONST char *filename)), AL_METHOD(int, save, (AL_CONST char *filename, struct SAMPLE *spl))));
#ifdef __cplusplus
}
#endif
#endif /* ifndef ALLEGRO_DIGI_H */
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