initial commit

This commit is contained in:
Christopher Shepherd 2012-12-29 13:48:03 -05:00
parent 3f31afec6e
commit e675b41584
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libsoundGS libsoundGS
========== ==========
Apple IIGS sound library Apple IIGS sound library
Streams a long-playing song from disk, also supports playing of other one-shot sounds while this is happening.
Written in ORCA/M assembler, but presents a C stack-based calling interface (was written with the intent of linking to ORCA/C modules).

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libsound.asm Normal file

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/*
* libsound.h
*
* function prototypes and definitions
*/
/*
* int soundInit( int MMID );
* pass Memory Manager ID to soundInit (it will request $4000 bytes with this
* ID)
*/
extern int soundInit( int MMID );
/*
* int soundPlayStart( char *path, int rate, int oversample, int echodelay );
* *path is pathname of sound file to begin playing
* NOTE: *path isn't a c-string, it's a GSOS string (2 byte length+data)
* oversample = 0 for no oversample, 1 for 2X, 2 for 4X
* echodelay is the delay (in VBL intervals) between L and R channels for
* a faux stereo effect
*/
int soundPlayStart( char *path, int rate, int oversample, int echodelay );
void BGSoundStart( void );
/*
* int soundMaint( void );
* call this function often to keep the music playing
*/
int soundMaint( void );
/*
* int soundStop( void );
* call this to stop the sound from playing
*/
int soundStop( void );
/*
* int soundPlayShort( int soundid, int rate );
* swap a short (<32KB) sound into available DOC RAM and
* play it on an available generator
* rate is DOC playback rate
* soundid is sound ID returned from loadOneSound(), see next function
*/
int soundPlayShort( int soundid, int rate );
/*
* int loadOneSound( char *path );
* load a sound from disk via GS/OS, allocate RAM for it from MM,
* and return a sound ID to use for future soundPlayShort() calls
* *path is a GS/OS path (16-bit length + data)
*/
int loadOneSound( char *path );