Mercurial > audio-send

     1 #ifndef _AL_EFFECT_H_

     2 #define _AL_EFFECT_H_

     3 

     4 #include "AL/al.h"

     5 

     6 #ifdef __cplusplus

     7 extern "C" {

     8 #endif

     9 

    10 enum {

    11     EAXREVERB = 0,

    12     REVERB,

    13     ECHO,

    14     MODULATOR,

    15     DEDICATED,

    16 

    17     MAX_EFFECTS

    18 };

    19 extern ALboolean DisabledEffects[MAX_EFFECTS];

    20 

    21 extern ALfloat ReverbBoost;

    22 extern ALboolean EmulateEAXReverb;

    23 

    24 typedef struct ALeffect

    25 {

    26     // Effect type (AL_EFFECT_NULL, ...)

    27     ALenum type;

    28 

    29     union {

    30         struct {

    31             // Shared Reverb Properties

    32             ALfloat Density;

    33             ALfloat Diffusion;

    34             ALfloat Gain;

    35             ALfloat GainHF;

    36             ALfloat DecayTime;

    37             ALfloat DecayHFRatio;

    38             ALfloat ReflectionsGain;

    39             ALfloat ReflectionsDelay;

    40             ALfloat LateReverbGain;

    41             ALfloat LateReverbDelay;

    42             ALfloat AirAbsorptionGainHF;

    43             ALfloat RoomRolloffFactor;

    44             ALboolean DecayHFLimit;

    45 

    46             // Additional EAX Reverb Properties

    47             ALfloat GainLF;

    48             ALfloat DecayLFRatio;

    49             ALfloat ReflectionsPan[3];

    50             ALfloat LateReverbPan[3];

    51             ALfloat EchoTime;

    52             ALfloat EchoDepth;

    53             ALfloat ModulationTime;

    54             ALfloat ModulationDepth;

    55             ALfloat HFReference;

    56             ALfloat LFReference;

    57         } Reverb;

    58 

    59         struct {

    60             ALfloat Delay;

    61             ALfloat LRDelay;

    62 

    63             ALfloat Damping;

    64             ALfloat Feedback;

    65 

    66             ALfloat Spread;

    67         } Echo;

    68 

    69         struct {

    70             ALfloat Frequency;

    71             ALfloat HighPassCutoff;

    72             ALint Waveform;

    73         } Modulator;

    74 

    75         struct {

    76             ALfloat Gain;

    77         } Dedicated;

    78     } Params;

    79 

    80     // Index to itself

    81     ALuint effect;

    82 } ALeffect;

    83 

    84 static __inline ALboolean IsReverbEffect(ALenum type)

    85 { return type == AL_EFFECT_REVERB || type == AL_EFFECT_EAXREVERB; }

    86 

    87 ALvoid ReleaseALEffects(ALCdevice *device);

    88 

    89 #ifdef __cplusplus

    90 }

    91 #endif

    92 

    93 #endif
author	Robert McIntyre <rlm@mit.edu>
date	Tue, 25 Oct 2011 13:02:31 -0700
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