reverb.c File Reference

Macros
#define	SWAP16(in, out)
#define	CONVERT   173123.404906676
#define	SCALE   16384
#define	INPUT_PARAM   0
#define	OUTPUT_PARAM   1
#define	FBCOEF_PARAM   2
#define	FFCOEF_PARAM   3
#define	GAIN_PARAM   4
#define	CHORUSRATE_PARAM   5
#define	CHORUSDEPTH_PARAM   6
#define	LPFILT_PARAM   7

Functions
void	au_fx_create (AuFX *fx, u8 effectType, ALHeap *heap)
void	au_filter_create (AuFilter *filter, ALHeap *heap)
void	au_filter_init (AuFilter *filter, s16 arg1, s16 arg2, s16 cutoff)
void	au_fx_load_preset (AuFX *fx, u8 effectType)
Acmd *	au_pull_fx (AuFX *fx, Acmd *ptr, s16 wetDmem, s16 tempDmem)
	Applies a chain of delay-line based effects to audio and mixes into output.
s32	au_fx_param_hdl (AuFX *fx, s16 index, s16 paramID, s32 value)

Variables
s32	SMALL_ROOM_PARAMS []
s32	BIG_ROOM_PARAMS []
s32	D_8007F0C0 []
s32	ECHO_PARAMS []
s32	CHORUS_PARAMS []
s32	FLANGE_PARAMS []
s32	NULL_PARAMS []
s32 *	AU_FX_CUSTOM_PARAMS []

Macro Definition Documentation

CHORUSDEPTH_PARAM

#define CHORUSDEPTH_PARAM   6

Referenced by au_fx_param_hdl().

CHORUSRATE_PARAM

#define CHORUSRATE_PARAM   5

Referenced by au_fx_param_hdl().

CONVERT

#define CONVERT   173123.404906676

Referenced by au_fx_load_preset(), and au_fx_param_hdl().

FBCOEF_PARAM

#define FBCOEF_PARAM   2

Referenced by au_fx_param_hdl().

FFCOEF_PARAM

#define FFCOEF_PARAM   3

Referenced by au_fx_param_hdl().

GAIN_PARAM

#define GAIN_PARAM   4

Referenced by au_fx_param_hdl().

INPUT_PARAM

#define INPUT_PARAM   0

Referenced by au_fx_param_hdl().

LPFILT_PARAM

#define LPFILT_PARAM   7

Referenced by au_fx_param_hdl().

OUTPUT_PARAM

#define OUTPUT_PARAM   1

Referenced by au_fx_param_hdl().

SCALE

#define SCALE   16384

SWAP16

#define SWAP16	(		in,
			out )

Value:

{ \
    s16 t = out; \
    out = in; \
    in = t; \
}

Referenced by au_pull_fx().

Function Documentation

au_filter_create()

void au_filter_create	(	AuFilter *	filter,
		ALHeap *	heap )

au_filter_init()

void au_filter_init	(	AuFilter *	filter,
		s16	arg1,
		s16	arg2,
		s16	cutoff )

Referenced by au_filter_create().

au_fx_create()

void au_fx_create	(	AuFX *	fx,
		u8	effectType,
		ALHeap *	heap )

Parameters

effectType

from enum AuEffectType

Referenced by au_driver_init().

au_fx_load_preset()

void au_fx_load_preset	(	AuFX *	fx,
		u8	effectType )

Referenced by au_bus_set_effect(), and au_fx_create().

au_fx_param_hdl()

s32 au_fx_param_hdl	(	AuFX *	fx,
		s16	index,
		s16	paramID,
		s32	value )

Referenced by au_bus_set_fx_params().

au_pull_fx()

Acmd * au_pull_fx	(	AuFX *	fx,
		Acmd *	ptr,
		s16	wetDmem,
		s16	tempDmem )

Applies a chain of delay-line based effects to audio and mixes into output.

For each delay tap in the FX chain:

• Loads delay input/output from circular buffer.
• Applies optional modulation and resampling.
• Applies feedforward/feedback mixing.
• Applies optional lowpass filtering.
• Mixes result into wet output buffer.

Parameters

fx	Pointer to FX state (delay taps, buffers, etc.)
ptr	Pointer to the current audio command list position.
wetDmem	DMEM offset to mix wet output into.
tempDmem	Base DMEM offset for temporary working buffers.

Returns

Updated command list pointer.

Referenced by alAudioFrame().

Variable Documentation

AU_FX_CUSTOM_PARAMS

s32* AU_FX_CUSTOM_PARAMS[]

Initial value:

= {
    NULL_PARAMS, NULL_PARAMS, NULL_PARAMS, NULL_PARAMS
}

Referenced by au_fx_load_preset(), and au_sfx_set_reverb_type().

BIG_ROOM_PARAMS

s32 BIG_ROOM_PARAMS[]

Initial value:

= {
    
        4,             14,
    
        0,       9,  9830,  -9830,      0,      0,      0,      0,
        2,       6,  3276,  -3276, 0x3FFF,      0,      0,      0,
        9,      12,  3276,  -3276, 0x3FFF,      0,      0,      0,
        0,      13,  6000,      0,      0,      0,      0,  0x5000
}

Referenced by au_fx_load_preset().

CHORUS_PARAMS

s32 CHORUS_PARAMS[]

Initial value:

= {
    
        1,              3,
    
        0,      1,  16384,      0, 0x7FFF,   7600,    700,      0
}

Referenced by au_fx_load_preset().

D_8007F0C0

s32 D_8007F0C0[]

Initial value:

= {
    
        4,             17,
    
        0,     11,   9830,  -9830,      0,      0,      0,      0,
        4,      9,   3276,  -3276, 0x3FFF,      0,      0,      0,
       11,     15,   3276,  -3276, 0x3FFF,      0,      0,      0,
        0,     16,   8000,      0,      0,      0,      0, 0x5000
}

ECHO_PARAMS

s32 ECHO_PARAMS[]

Initial value:

= {
    
        1,             14,
    
        0,     13,  20000,      0, 0x7FFF,      0,      0, 0x7FFF
}

Referenced by au_fx_load_preset().

FLANGE_PARAMS

s32 FLANGE_PARAMS[]

Initial value:

= {
    
        1,              3,
    
        0,      1,      0, 0x5FFF, 0x7FFF,    380,    500,      0
}

Referenced by au_fx_load_preset().

NULL_PARAMS

s32 NULL_PARAMS[]

Initial value:

= {
    
        0,              0,
    
        0,      0,      0,      0,      0,      0,      0,      0
}

Referenced by au_fx_load_preset().

SMALL_ROOM_PARAMS

s32 SMALL_ROOM_PARAMS[]

Initial value:

= {
    
        3,             11,
    
        0,       9,  9830,  -9830,      0,      0,      0,      0,
        3,       7,  3276,  -3276, 0x3FFF,      0,      0,      0,
        0,      10,  5000,      0,      0,      0,      0, 0x5000
}

Referenced by au_fx_load_preset().