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92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
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/* SoundIt library 0.04
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Copyright 1994 Brad Pitzel pitzel@cs.sfu.ca
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Adapted to Solaris/SunOS by Peter Ekberg.
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Feel free to use/distribute/modify as long as proper credits
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are included.
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*/
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/* Designed for digital sound effects in interactive apps (games, drum
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machines, digital organs, ???)
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Will mix channels of mono 8-bit raw samples, & play back in "real-time".
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Each channel can only play one sample at a time, but all
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channels can play a different sample simultaneously.
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If you have sox, use the ' -t .ub ' option to make samples
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that this library will play properly.
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*/
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#ifndef SOUNDIT_VERS
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#define SOUNDIT_VERS "0.04"
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#include <stdlib.h>
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#include <stdio.h>
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#ifndef EXIT_FAILURE
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#define EXIT_FAILURE 1
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#endif
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#ifndef EXIT_SUCCESS
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#define EXIT_SUCCESS 0
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#endif
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/* 00002 = 2 fragments */
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/* 00007 = means each fragment is 2^7 or 128 bytes */
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/* See voxware docs (in /usr/src/linux/drivers/sound) for more info */
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#define FRAG_SPEC 0x00020007
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/*==========================================================================*/
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typedef struct {
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unsigned char *data; /* unsigned 8-bit raw samples */
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int len; /* length of sample in bytes */
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int loop; /* loop=0 : play sample once, */
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/* loop=1 : loop sample */
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} Sample;
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void dump_snd_list(void);
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/*==========================================================================*/
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/* given the name of a .raw sound file, load it into the Sample struct */
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/* pointed to by 'sample' */
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int
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Snd_loadRawSample(const char *file, Sample *sample, int loop);
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/*==========================================================================*/
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/* init sound device, etc.. */
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/* num_snd = the number of samples in the sample array *sa */
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/* sa = the sample array */
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/* freq = the rate (Hz) to play back the samples */
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/* channels = # of channels to mix */
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/* sound_device = a char string for the sound device, eg, "/dev/dsp" */
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/* returns: 0=success, -1=failure.*/
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int
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Snd_init(int num_snd, const Sample *sa, int freq,
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int channels, const char *sound_device);
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/* shutdown sample player, free mem, etc/etc..*/
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int
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Snd_restore(void);
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/* play a sound effect in the given channel 1..n*/
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/* volume = integers from 0 (off) to 100 (full volume)*/
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int
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Snd_effect(int nr, int channel);
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/* stop a channel (1..n) from playing*/
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/*void
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Snd_reset(enum snd_channel channel);*/
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/* stop all channels from playing*/
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/*void
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Snd_reset(void);*/
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#endif
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