Abstraction layer header for sound on retro systems. More...

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Data Structures
struct	RETROSND_CHANNEL

struct	RETROSND_TUNE
	Simple tune designed to be played on the software synthesizer. More...

Macros
#define	RETROSND_CHANNEL_CT_MAX 4

#define	RETROSND_TRACE_LVL 0

#define	RETROSND_REG_TRACE_LVL 0

#define	RETROSND_SAMPLES_CT 2048

#define	RETROSND_FLAG_INIT 0x01
	Flag in RETROSND_STATE::flags indicating initialization was successful.

#define	RETROSND_VOICE_BREATH 122

#define	RETROSND_VOICE_SEASHORE 123

#define	RETROSND_VOICE_BIRD_TWEET 124

#define	RETROSND_VOICE_PHONE_RING 125

#define	RETROSND_VOICE_HELICOPTER 126

#define	RETROSND_VOICE_APPLAUSE 127

#define	RETROSND_VOICE_GUNSHOT 128
	Parameter for retrosnd_set_voice() indicating a gunshot sound effect.

#define	RETROSND_CONTROL_VOL 7

#define	retrosnd_tune_get_note(tune, channel, idx) ((tune)->notes[idx][channel])

#define	RETROSND_TUNE_NOTE_DISABLED (255)

#define	RETROSND_NOTES_START (36)

#define	RETROSND_NOTES_OCTAVE_SZ (12)

#define	RETROSND_NOTES_SZ (RETROSND_NOTES_OCTAVE_SZ * 3)

#define	RETROSND_NOTES_OCTAVE_MIDDLE (48)

#define	RETROSND_NOTES_TABLE(f)

#define	RETROSND_NOTES_TABLE_EXT_CONSTS(num, name) extern MAUG_CONST int8_t RSN_ ## name;

Functions
MERROR_RETVAL	retrosnd_init (struct RETROFLAT_ARGS *args)
	Initialize retrosnd engine. More...

void	retrosnd_set_sf_bank (const char *filename_in)
	Set the name of the voice bank filename to use.

void	retrosnd_set_voice (uint8_t channel, uint8_t voice)

void	retrosnd_set_control (uint8_t channel, uint8_t key, uint8_t val)

void	retrosnd_note_on (uint8_t channel, uint8_t pitch, uint8_t vel)

void	retrosnd_note_off (uint8_t channel, uint8_t pitch, uint8_t vel)

void	retrosnd_shutdown (void)

void	retrosnd_pump (void)

void	retrosnd_note_on_deadline (uint8_t channel, uint8_t pitch, retroflat_ms_t after)

MERROR_RETVAL	retrosnd_tune_init (MAUG_MHANDLE *p_tune_h, size_t notes_ct, uint16_t ms_per_note)

MERROR_RETVAL	retrosnd_tune_update (struct RETROSND_TUNE *tune)
	Update the currently playing note in the given tune. More...

void	retrosnd_tune_seek (struct RETROSND_TUNE *tune, int8_t idx)

MERROR_RETVAL	retrosnd_tune_set_note (struct RETROSND_TUNE *, int channel, int index, int8_t note)

int16_t	_retrosnd_generate_note (struct RETROSND_CHANNEL *channels)
	Increment synthesizer phase based on its instrument and system settings. More...

MERROR_RETVAL	_retrosnd_set_control (struct RETROSND_CHANNEL *channel, uint8_t key, uint8_t val)
	Set controls for the software synthesizer. More...

Detailed Description

Abstraction layer header for sound on retro systems.

RetroSound is a compatibility layer for making sound on various platforms, including Windows, MS-DOS or Linux.

To use, define RETROSND_C before including this header from your main.c.

You may include this header in other .c files, as well, but RETROSND_C should ONLY be declared ONCE in the entire program.

It is highly advised to use this in conjunction with retroflt.h.

maug.h should also be included before this header.

Special thanks to: "Programming the Adlib/Sound Blaster FM Music Chips" by Jeffrey S. Lee (https://bochs.sourceforge.io/techspec/adlib_sb.txt) and "The Gravis Ultrasound" by neuraldk (http://neuraldk.org/document.php?gus) for DOS platform-specific stuff.

And the MPU-401 interface for being so darn simple!

Data Structures