diff options
Diffstat (limited to 'OpenAL32')
| -rw-r--r-- | OpenAL32/Include/alFilter.h | 3 | ||||
| -rw-r--r-- | OpenAL32/alFilter.c | 76 |
2 files changed, 78 insertions, 1 deletions
diff --git a/OpenAL32/Include/alFilter.h b/OpenAL32/Include/alFilter.h index 86547182..0b3ab844 100644 --- a/OpenAL32/Include/alFilter.h +++ b/OpenAL32/Include/alFilter.h @@ -8,6 +8,7 @@ extern "C" { #endif #define LOWPASSFREQREF (5000.0f) +#define HIGHPASSFREQREF (250.0f) /* Filters implementation is based on the "Cookbook formulae for audio * @@ -65,6 +66,8 @@ typedef struct ALfilter { ALfloat Gain; ALfloat GainHF; ALfloat HFReference; + ALfloat GainLF; + ALfloat LFReference; void (*SetParami)(struct ALfilter *filter, ALCcontext *context, ALenum param, ALint val); void (*SetParamiv)(struct ALfilter *filter, ALCcontext *context, ALenum param, const ALint *vals); diff --git a/OpenAL32/alFilter.c b/OpenAL32/alFilter.c index ade41f4c..154c167e 100644 --- a/OpenAL32/alFilter.c +++ b/OpenAL32/alFilter.c @@ -145,7 +145,7 @@ AL_API ALvoid AL_APIENTRY alFilteri(ALuint filter, ALenum param, ALint value) { if(param == AL_FILTER_TYPE) { - if(value == AL_FILTER_NULL || value == AL_FILTER_LOWPASS) + if(value == AL_FILTER_NULL || value == AL_FILTER_LOWPASS || value == AL_FILTER_HIGHPASS) InitFilterParams(ALFilter, value); else alSetError(Context, AL_INVALID_VALUE); @@ -469,6 +469,61 @@ static void lp_GetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, A } +static void hp_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val)) +{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); } +static void hp_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals)) +{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); } +static void hp_SetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat val) +{ + switch(param) + { + case AL_HIGHPASS_GAIN: + if(!(val >= AL_HIGHPASS_MIN_GAIN && val <= AL_HIGHPASS_MAX_GAIN)) + SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE); + filter->Gain = val; + break; + + case AL_HIGHPASS_GAINLF: + if(!(val >= AL_HIGHPASS_MIN_GAINLF && val <= AL_HIGHPASS_MAX_GAINLF)) + SET_ERROR_AND_RETURN(context, AL_INVALID_VALUE); + filter->GainLF = val; + break; + + default: + SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); + } +} +static void hp_SetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, const ALfloat *vals) +{ + hp_SetParamf(filter, context, param, vals[0]); +} + +static void hp_GetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(val)) +{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); } +static void hp_GetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint *UNUSED(vals)) +{ SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); } +static void hp_GetParamf(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *val) +{ + switch(param) + { + case AL_HIGHPASS_GAIN: + *val = filter->Gain; + break; + + case AL_HIGHPASS_GAINLF: + *val = filter->GainLF; + break; + + default: + SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); + } +} +static void hp_GetParamfv(ALfilter *filter, ALCcontext *context, ALenum param, ALfloat *vals) +{ + hp_GetParamf(filter, context, param, vals); +} + + static void null_SetParami(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), ALint UNUSED(val)) { SET_ERROR_AND_RETURN(context, AL_INVALID_ENUM); } static void null_SetParamiv(ALfilter *UNUSED(filter), ALCcontext *context, ALenum UNUSED(param), const ALint *UNUSED(vals)) @@ -511,6 +566,8 @@ static void InitFilterParams(ALfilter *filter, ALenum type) filter->Gain = AL_LOWPASS_DEFAULT_GAIN; filter->GainHF = AL_LOWPASS_DEFAULT_GAINHF; filter->HFReference = LOWPASSFREQREF; + filter->GainLF = 1.0f; + filter->LFReference = HIGHPASSFREQREF; filter->SetParami = lp_SetParami; filter->SetParamiv = lp_SetParamiv; @@ -521,6 +578,23 @@ static void InitFilterParams(ALfilter *filter, ALenum type) filter->GetParamf = lp_GetParamf; filter->GetParamfv = lp_GetParamfv; } + else if(type == AL_FILTER_HIGHPASS) + { + filter->Gain = AL_HIGHPASS_DEFAULT_GAIN; + filter->GainHF = 1.0f; + filter->HFReference = LOWPASSFREQREF; + filter->GainLF = AL_HIGHPASS_DEFAULT_GAINLF; + filter->LFReference = HIGHPASSFREQREF; + + filter->SetParami = hp_SetParami; + filter->SetParamiv = hp_SetParamiv; + filter->SetParamf = hp_SetParamf; + filter->SetParamfv = hp_SetParamfv; + filter->GetParami = hp_GetParami; + filter->GetParamiv = hp_GetParamiv; + filter->GetParamf = hp_GetParamf; + filter->GetParamfv = hp_GetParamfv; + } else { filter->SetParami = null_SetParami; |