src/effect.cpp

   1
   2 #include "config.h"
   3
   4 #include "effect.h"
   5
   6 #include <stdexcept>
   7
   8 #include "context.h"
   9
  10 namespace alure
  11 {
  12
  13 template<typename T>
  14 static inline T clamp(const T& val, const T& min, const T& max)
  15 { return std::min<T>(std::max<T>(val, min), max); }
  16
  17 void EffectImpl::setReverbProperties(const EFXEAXREVERBPROPERTIES &props)
  18 {
  19     CheckContext(mContext);
  20
  21     if(mType != AL_EFFECT_EAXREVERB && mType != AL_EFFECT_REVERB)
  22     {
  23         alGetError();
  24         mContext->alEffecti(mId, AL_EFFECT_TYPE, AL_EFFECT_EAXREVERB);
  25         if(alGetError() == AL_NO_ERROR)
  26             mType = AL_EFFECT_EAXREVERB;
  27         else
  28         {
  29             mContext->alEffecti(mId, AL_EFFECT_TYPE, AL_EFFECT_REVERB);
  30             if(alGetError() != AL_NO_ERROR)
  31                 throw std::runtime_error("Failed to set reverb type");
  32             mType = AL_EFFECT_REVERB;
  33         }
  34     }
  35
  36     if(mType == AL_EFFECT_EAXREVERB)
  37     {
  38 #define SETPARAM(e,t,v) mContext->alEffectf((e), AL_EAXREVERB_##t, clamp((v), AL_EAXREVERB_MIN_##t, AL_EAXREVERB_MAX_##t))
  39         SETPARAM(mId, DENSITY, props.flDensity);
  40         SETPARAM(mId, DIFFUSION, props.flDiffusion);
  41         SETPARAM(mId, GAIN, props.flGain);
  42         SETPARAM(mId, GAINHF, props.flGainHF);
  43         SETPARAM(mId, GAINLF, props.flGainLF);
  44         SETPARAM(mId, DECAY_TIME, props.flDecayTime);
  45         SETPARAM(mId, DECAY_HFRATIO, props.flDecayHFRatio);
  46         SETPARAM(mId, DECAY_LFRATIO, props.flDecayLFRatio);
  47         SETPARAM(mId, REFLECTIONS_GAIN, props.flReflectionsGain);
  48         SETPARAM(mId, REFLECTIONS_DELAY, props.flReflectionsDelay);
  49         mContext->alEffectfv(mId, AL_EAXREVERB_REFLECTIONS_PAN, props.flReflectionsPan);
  50         SETPARAM(mId, LATE_REVERB_GAIN, props.flLateReverbGain);
  51         SETPARAM(mId, LATE_REVERB_DELAY, props.flLateReverbDelay);
  52         mContext->alEffectfv(mId, AL_EAXREVERB_LATE_REVERB_PAN, props.flLateReverbPan);
  53         SETPARAM(mId, ECHO_TIME, props.flEchoTime);
  54         SETPARAM(mId, ECHO_DEPTH, props.flEchoDepth);
  55         SETPARAM(mId, MODULATION_TIME, props.flModulationTime);
  56         SETPARAM(mId, MODULATION_DEPTH, props.flModulationDepth);
  57         SETPARAM(mId, AIR_ABSORPTION_GAINHF, props.flAirAbsorptionGainHF);
  58         SETPARAM(mId, HFREFERENCE, props.flHFReference);
  59         SETPARAM(mId, LFREFERENCE, props.flLFReference);
  60         SETPARAM(mId, ROOM_ROLLOFF_FACTOR, props.flRoomRolloffFactor);
  61         mContext->alEffecti(mId, AL_EAXREVERB_DECAY_HFLIMIT, (props.iDecayHFLimit ? AL_TRUE : AL_FALSE));
  62 #undef SETPARAM
  63     }
  64     else if(mType == AL_EFFECT_REVERB)
  65     {
  66 #define SETPARAM(e,t,v) mContext->alEffectf((e), AL_REVERB_##t, clamp((v), AL_REVERB_MIN_##t, AL_REVERB_MAX_##t))
  67         SETPARAM(mId, DENSITY, props.flDensity);
  68         SETPARAM(mId, DIFFUSION, props.flDiffusion);
  69         SETPARAM(mId, GAIN, props.flGain);
  70         SETPARAM(mId, GAINHF, props.flGainHF);
  71         SETPARAM(mId, DECAY_TIME, props.flDecayTime);
  72         SETPARAM(mId, DECAY_HFRATIO, props.flDecayHFRatio);
  73         SETPARAM(mId, REFLECTIONS_GAIN, props.flReflectionsGain);
  74         SETPARAM(mId, REFLECTIONS_DELAY, props.flReflectionsDelay);
  75         SETPARAM(mId, LATE_REVERB_GAIN, props.flLateReverbGain);
  76         SETPARAM(mId, LATE_REVERB_DELAY, props.flLateReverbDelay);
  77         SETPARAM(mId, AIR_ABSORPTION_GAINHF, props.flAirAbsorptionGainHF);
  78         SETPARAM(mId, ROOM_ROLLOFF_FACTOR, props.flRoomRolloffFactor);
  79         mContext->alEffecti(mId, AL_REVERB_DECAY_HFLIMIT, (props.iDecayHFLimit ? AL_TRUE : AL_FALSE));
  80 #undef SETPARAM
  81     }
  82 }
  83
  84 void EffectImpl::destroy()
  85 {
  86     CheckContext(mContext);
  87
  88     alGetError();
  89     mContext->alDeleteEffects(1, &mId);
  90     if(alGetError() != AL_NO_ERROR)
  91         throw std::runtime_error("Effect failed to delete");
  92     mId = 0;
  93
  94     delete this;
  95 }
  96
  97 DECL_THUNK1(void, Effect, setReverbProperties,, const EFXEAXREVERBPROPERTIES&)
  98 void Effect::destroy()
  99 {
 100     pImpl->destroy();
 101     pImpl = nullptr;
 102 }
 103
 104 }