home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Linux Cubed Series 8: LINUX Games
/
Linux Cubed Series 8 - LINUX Games.iso
/
games
/
video
/
zapem-0.000
/
zapem-0
/
zapem
/
soundIt.h
< prev
next >
Wrap
C/C++ Source or Header
|
1995-05-06
|
3KB
|
87 lines
/* SoundIt library 0.04
Copyright 1994 Brad Pitzel pitzel@cs.sfu.ca
Feel free to use/distribute/modify as long as proper credits
are included.
*/
/* Designed for digital sound effects in interactive apps (games, drum
machines, digital organs, ???)
Will mix channels of mono 8-bit raw samples, & play back in "real-time".
Each channel can only play one sample at a time, but all
channels can play a different sample simultaneously.
If you have sox, use the ' -t .ub ' option to make samples
that this library will play properly.
*/
#ifndef SOUNDIT_VERS
#define SOUNDIT_VERS "0.04"
#include <stdlib.h>
#include <stdio.h>
/* 00002 = 2 fragments */
/* 00007 = means each fragment is 2^7 or 128 bytes */
/* See voxware docs (in /usr/src/linux/drivers/sound) for more info */
#define FRAG_SPEC 0x00020007
/*==========================================================================*/
struct Sample
{
unsigned char *data; /* unsigned 8-bit raw samples */
int len; /* length of sample in bytes */
};
typedef struct Sample Sample;
/*==========================================================================*/
/* given the name of a .raw sound file, load it into the Sample struct */
/* pointed to by 'sample' */
int
Snd_loadRawSample( const char *file, Sample *sample );
/* also load .au files */
int
Snd_loadUlawSample( const char *file, Sample *sample );
/*==========================================================================*/
/* init sound device, etc.. */
/* num_snd = the number of samples in the sample array *sa */
/* sa = the sample array */
/* freq = the rate (Hz) to play back the samples */
/* channels = # of channels to mix */
/* sound_device = a char string for the sound device, eg, "/dev/dsp" */
/* returns: 0=success, -1=failure.*/
int
Snd_init( int num_snd, const Sample *sa, int freq,
int channels, const char *sound_device );
/* shutdown sample player, free mem, etc/etc..*/
int
Snd_restore();
/* play a sound effect in the given channel 1..n*/
/* volume = integers from 0 (off) to 100 (full volume)*/
int
Snd_effect( int nr, int channel );
/* stop a channel (1..n) from playing*/
/*void
Snd_reset(enum snd_channel channel);*/
/* stop all channels from playing*/
/*void
Snd_reset();*/
#endif