ALvoid AL_APIENTRY alDeleteFilters(ALsizei n, ALuint *filters)
{
ALCcontext *Context;
ALfilter *ALFilter;
ALsizei i;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (n >= 0)
{
// Check that all filters are valid
for (i = 0; i < n; i++)
{
if (!alIsFilter(filters[i]))
{
alSetError(AL_INVALID_NAME);
break;
}
}
if (i == n)
{
// All filters are valid
for (i = 0; i < n; i++)
{
// Recheck that the filter is valid, because there could be duplicated names
if (filters[i] && alIsFilter(filters[i]))
{
ALfilter **list;
ALFilter = ((ALfilter*)ALTHUNK_LOOKUPENTRY(filters[i]));
// Remove Source from list of Sources
list = &g_FilterList;
while(*list && *list != ALFilter)
list = &(*list)->next;
if(*list)
*list = (*list)->next;
ALTHUNK_REMOVEENTRY(ALFilter->filter);
memset(ALFilter, 0, sizeof(ALfilter));
free(ALFilter);
g_FilterCount--;
}
}
}
}
else
alSetError(AL_INVALID_VALUE);
ProcessContext(Context);
}
ALvoid AL_APIENTRY alGetFilteriv(ALuint filter, ALenum param, ALint *piValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
switch(param)
{
case AL_FILTER_TYPE:
alGetFilteri(filter, param, piValues);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALvoid AL_APIENTRY alGetFilteri(ALuint filter, ALenum param, ALint *piValue)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
ALfilter *ALFilter = (ALfilter*)ALTHUNK_LOOKUPENTRY(filter);
switch(param)
{
case AL_FILTER_TYPE:
*piValue = ALFilter->type;
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALvoid AL_APIENTRY alFilteri(ALuint filter, ALenum param, ALint iValue)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
ALfilter *ALFilter = (ALfilter*)ALTHUNK_LOOKUPENTRY(filter);
switch(param)
{
case AL_FILTER_TYPE:
if(iValue == AL_FILTER_NULL ||
iValue == AL_FILTER_LOWPASS)
InitFilterParams(ALFilter, iValue);
else
alSetError(AL_INVALID_VALUE);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALvoid AL_APIENTRY alFilterf(ALuint filter, ALenum param, ALfloat flValue)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
ALfilter *ALFilter = (ALfilter*)ALTHUNK_LOOKUPENTRY(filter);
switch(ALFilter->type)
{
case AL_FILTER_LOWPASS:
switch(param)
{
case AL_LOWPASS_GAIN:
if(flValue >= 0.0f && flValue <= 1.0f)
ALFilter->Gain = flValue;
else
alSetError(AL_INVALID_VALUE);
break;
case AL_LOWPASS_GAINHF:
if(flValue >= 0.0f && flValue <= 1.0f)
ALFilter->GainHF = flValue;
else
alSetError(AL_INVALID_VALUE);
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
break;
default:
alSetError(AL_INVALID_ENUM);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
ALvoid AL_APIENTRY alGetFilterfv(ALuint filter, ALenum param, ALfloat *pflValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
switch(param)
{
default:
alGetFilterf(filter, param, pflValues);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
CEFX::CEFX(ALCdevice* device)
:enabled(false)
,supported(false)
,sfxProperties(NULL)
,sfxSlot(0)
,sfxReverb(0)
,sfxFilter(0)
,updates(0)
,maxSlots(0)
,maxSlotsPerSource(0)
{
SetAirAbsorptionFactor(configHandler->GetFloat("snd_airAbsorption"));
bool hasExtension = alcIsExtensionPresent(device, "ALC_EXT_EFX");
if(hasExtension && alGenEffects && alDeleteEffects)
supported = true;
//! set default preset
eaxPresets["default"] = eaxPresets[default_preset];
//! always allocate this
sfxProperties = new EAXSfxProps();
*sfxProperties = eaxPresets[default_preset];
if (!supported) {
if(!hasExtension)
LOG(" EFX Supported: no");
else
LOG(" EFX is supported but software does not seem to work properly");
return;
}
//! clear log
alGetError() ;
//! Check Available Effects
{
static const ALuint effects[] = {
AL_EFFECT_REVERB,
AL_EFFECT_EAXREVERB,
AL_EFFECT_CHORUS,
AL_EFFECT_DISTORTION,
AL_EFFECT_ECHO,
AL_EFFECT_FLANGER,
AL_EFFECT_FREQUENCY_SHIFTER,
AL_EFFECT_VOCAL_MORPHER,
AL_EFFECT_PITCH_SHIFTER,
AL_EFFECT_RING_MODULATOR,
AL_EFFECT_AUTOWAH,
AL_EFFECT_COMPRESSOR,
AL_EFFECT_EQUALIZER
};
ALuint alFx;
alGenEffects(1, &alFx);
if (alGetError() == AL_NO_ERROR) {
for(size_t i = 0; i < sizeof(effects); i++) {
const ALuint fx = effects[i];
alEffecti(alFx, AL_EFFECT_TYPE, fx);
effectsSupported[fx] = (alGetError() == AL_NO_ERROR);
}
}
alDeleteEffects(1, &alFx);
}
//! Check Available Filters
{
static const ALuint filters[] = {
AL_FILTER_LOWPASS,
AL_FILTER_HIGHPASS,
AL_FILTER_BANDPASS
};
ALuint alFilter;
alGenFilters(1, &alFilter);
if (alGetError() == AL_NO_ERROR) {
for(size_t i = 0; i < sizeof(filters); i++) {
const ALuint filter = filters[i];
alFilteri(alFilter, AL_FILTER_TYPE, filter);
filtersSupported[filter] = (alGetError() == AL_NO_ERROR);
}
}
alDeleteFilters(1, &alFilter);
}
//! Check Max Available EffectSlots
{
int n;
ALuint alFXSlots[128];
for (n = 0; n < 128; n++) {
alGenAuxiliaryEffectSlots(1, &alFXSlots[n]);
if (alGetError() != AL_NO_ERROR)
break;
}
maxSlots = n;
alDeleteAuxiliaryEffectSlots(n, alFXSlots);
}
//! Check Max AUX FX SLOTS Per Sound Source
alcGetIntegerv(device, ALC_MAX_AUXILIARY_SENDS, 1, (ALCint*)&maxSlotsPerSource);
//! Check requirements
if (!effectsSupported[AL_EFFECT_EAXREVERB]
|| !filtersSupported[AL_FILTER_LOWPASS]
|| (maxSlots<1)
|| (maxSlotsPerSource<1)
) {
LOG_L(L_WARNING, " EFX Supported: no");
supported = false;
return;
}
//! Create our global sfx enviroment
alGenAuxiliaryEffectSlots(1, &sfxSlot);
alGenEffects(1, &sfxReverb);
alEffecti(sfxReverb, AL_EFFECT_TYPE, AL_EFFECT_EAXREVERB);
alGenFilters(1, &sfxFilter);
alFilteri(sfxFilter, AL_FILTER_TYPE, AL_FILTER_LOWPASS);
if (!alIsAuxiliaryEffectSlot(sfxSlot) || !alIsEffect(sfxReverb) || !alIsFilter(sfxFilter)) {
LOG_L(L_ERROR, " Initializing EFX failed!");
alDeleteFilters(1, &sfxFilter);
alDeleteEffects(1, &sfxReverb);
alDeleteAuxiliaryEffectSlots(1, &sfxSlot);
supported = false;
return;
}
//! Load defaults
CommitEffects();
if (!CheckError(" EFX")) {
LOG_L(L_ERROR, " Initializing EFX failed!");
alAuxiliaryEffectSloti(sfxSlot, AL_EFFECTSLOT_EFFECT, AL_EFFECT_NULL);
alDeleteFilters(1, &sfxFilter);
alDeleteEffects(1, &sfxReverb);
alDeleteAuxiliaryEffectSlots(1, &sfxSlot);
supported = false;
return;
}
//! User may disable it (performance reasons?)
enabled = configHandler->GetBool("UseEFX");
LOG(" EFX Enabled: %s", (enabled ? "yes" : "no"));
if (enabled) {
LOG_L(L_DEBUG, " EFX MaxSlots: %i", maxSlots);
LOG_L(L_DEBUG, " EFX MaxSlotsPerSource: %i", maxSlotsPerSource);
}
configHandler->NotifyOnChange(this);
}
static ALboolean CDECL wine_alIsFilter(ALuint fid)
{
return alIsFilter(fid);
}
