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#include "config.h"
#include <optional>
#include <stdexcept>
#include "AL/al.h"
#include "AL/efx.h"
#include "alc/effects/base.h"
#include "effects.h"
#ifdef ALSOFT_EAX
#include <cassert>
#include "alnumeric.h"
#include "al/eax/exception.h"
#include "al/eax/utils.h"
#endif // ALSOFT_EAX
namespace {
std::optional<FShifterDirection> DirectionFromEmum(ALenum value)
{
switch(value)
{
case AL_FREQUENCY_SHIFTER_DIRECTION_DOWN: return FShifterDirection::Down;
case AL_FREQUENCY_SHIFTER_DIRECTION_UP: return FShifterDirection::Up;
case AL_FREQUENCY_SHIFTER_DIRECTION_OFF: return FShifterDirection::Off;
}
return std::nullopt;
}
ALenum EnumFromDirection(FShifterDirection dir)
{
switch(dir)
{
case FShifterDirection::Down: return AL_FREQUENCY_SHIFTER_DIRECTION_DOWN;
case FShifterDirection::Up: return AL_FREQUENCY_SHIFTER_DIRECTION_UP;
case FShifterDirection::Off: return AL_FREQUENCY_SHIFTER_DIRECTION_OFF;
}
throw std::runtime_error{"Invalid direction: "+std::to_string(static_cast<int>(dir))};
}
EffectProps genDefaultProps() noexcept
{
FshifterProps props{};
props.Frequency = AL_FREQUENCY_SHIFTER_DEFAULT_FREQUENCY;
props.LeftDirection = *DirectionFromEmum(AL_FREQUENCY_SHIFTER_DEFAULT_LEFT_DIRECTION);
props.RightDirection = *DirectionFromEmum(AL_FREQUENCY_SHIFTER_DEFAULT_RIGHT_DIRECTION);
return props;
}
} // namespace
const EffectProps FshifterEffectProps{genDefaultProps()};
void EffectHandler::SetParami(FshifterProps &props, ALenum param, int val)
{
switch(param)
{
case AL_FREQUENCY_SHIFTER_LEFT_DIRECTION:
if(auto diropt = DirectionFromEmum(val))
props.LeftDirection = *diropt;
else
throw effect_exception{AL_INVALID_VALUE,
"Unsupported frequency shifter left direction: 0x%04x", val};
break;
case AL_FREQUENCY_SHIFTER_RIGHT_DIRECTION:
if(auto diropt = DirectionFromEmum(val))
props.RightDirection = *diropt;
else
throw effect_exception{AL_INVALID_VALUE,
"Unsupported frequency shifter right direction: 0x%04x", val};
break;
default:
throw effect_exception{AL_INVALID_ENUM,
"Invalid frequency shifter integer property 0x%04x", param};
}
}
void EffectHandler::SetParamiv(FshifterProps &props, ALenum param, const int *vals)
{ SetParami(props, param, vals[0]); }
void EffectHandler::SetParamf(FshifterProps &props, ALenum param, float val)
{
switch(param)
{
case AL_FREQUENCY_SHIFTER_FREQUENCY:
if(!(val >= AL_FREQUENCY_SHIFTER_MIN_FREQUENCY && val <= AL_FREQUENCY_SHIFTER_MAX_FREQUENCY))
throw effect_exception{AL_INVALID_VALUE, "Frequency shifter frequency out of range"};
props.Frequency = val;
break;
default:
throw effect_exception{AL_INVALID_ENUM, "Invalid frequency shifter float property 0x%04x",
param};
}
}
void EffectHandler::SetParamfv(FshifterProps &props, ALenum param, const float *vals)
{ SetParamf(props, param, vals[0]); }
void EffectHandler::GetParami(const FshifterProps &props, ALenum param, int *val)
{
switch(param)
{
case AL_FREQUENCY_SHIFTER_LEFT_DIRECTION:
*val = EnumFromDirection(props.LeftDirection);
break;
case AL_FREQUENCY_SHIFTER_RIGHT_DIRECTION:
*val = EnumFromDirection(props.RightDirection);
break;
default:
throw effect_exception{AL_INVALID_ENUM,
"Invalid frequency shifter integer property 0x%04x", param};
}
}
void EffectHandler::GetParamiv(const FshifterProps &props, ALenum param, int *vals)
{ GetParami(props, param, vals); }
void EffectHandler::GetParamf(const FshifterProps &props, ALenum param, float *val)
{
switch(param)
{
case AL_FREQUENCY_SHIFTER_FREQUENCY:
*val = props.Frequency;
break;
default:
throw effect_exception{AL_INVALID_ENUM, "Invalid frequency shifter float property 0x%04x",
param};
}
}
void EffectHandler::GetParamfv(const FshifterProps &props, ALenum param, float *vals)
{ GetParamf(props, param, vals); }
#ifdef ALSOFT_EAX
namespace {
using FrequencyShifterCommitter = EaxCommitter<EaxFrequencyShifterCommitter>;
struct FrequencyValidator {
void operator()(float flFrequency) const
{
eax_validate_range<FrequencyShifterCommitter::Exception>(
"Frequency",
flFrequency,
EAXFREQUENCYSHIFTER_MINFREQUENCY,
EAXFREQUENCYSHIFTER_MAXFREQUENCY);
}
}; // FrequencyValidator
struct LeftDirectionValidator {
void operator()(unsigned long ulLeftDirection) const
{
eax_validate_range<FrequencyShifterCommitter::Exception>(
"Left Direction",
ulLeftDirection,
EAXFREQUENCYSHIFTER_MINLEFTDIRECTION,
EAXFREQUENCYSHIFTER_MAXLEFTDIRECTION);
}
}; // LeftDirectionValidator
struct RightDirectionValidator {
void operator()(unsigned long ulRightDirection) const
{
eax_validate_range<FrequencyShifterCommitter::Exception>(
"Right Direction",
ulRightDirection,
EAXFREQUENCYSHIFTER_MINRIGHTDIRECTION,
EAXFREQUENCYSHIFTER_MAXRIGHTDIRECTION);
}
}; // RightDirectionValidator
struct AllValidator {
void operator()(const EAXFREQUENCYSHIFTERPROPERTIES& all) const
{
FrequencyValidator{}(all.flFrequency);
LeftDirectionValidator{}(all.ulLeftDirection);
RightDirectionValidator{}(all.ulRightDirection);
}
}; // AllValidator
} // namespace
template<>
struct FrequencyShifterCommitter::Exception : public EaxException {
explicit Exception(const char *message) : EaxException{"EAX_FREQUENCY_SHIFTER_EFFECT", message}
{ }
};
template<>
[[noreturn]] void FrequencyShifterCommitter::fail(const char *message)
{
throw Exception{message};
}
bool EaxFrequencyShifterCommitter::commit(const EAXFREQUENCYSHIFTERPROPERTIES &props)
{
if(auto *cur = std::get_if<EAXFREQUENCYSHIFTERPROPERTIES>(&mEaxProps); cur && *cur == props)
return false;
mEaxProps = props;
auto get_direction = [](unsigned long dir) noexcept
{
if(dir == EAX_FREQUENCYSHIFTER_DOWN)
return FShifterDirection::Down;
if(dir == EAX_FREQUENCYSHIFTER_UP)
return FShifterDirection::Up;
return FShifterDirection::Off;
};
mAlProps = [&]{
FshifterProps ret{};
ret.Frequency = props.flFrequency;
ret.LeftDirection = get_direction(props.ulLeftDirection);
ret.RightDirection = get_direction(props.ulRightDirection);
return ret;
}();
return true;
}
void EaxFrequencyShifterCommitter::SetDefaults(EaxEffectProps &props)
{
static constexpr EAXFREQUENCYSHIFTERPROPERTIES defprops{[]
{
EAXFREQUENCYSHIFTERPROPERTIES ret{};
ret.flFrequency = EAXFREQUENCYSHIFTER_DEFAULTFREQUENCY;
ret.ulLeftDirection = EAXFREQUENCYSHIFTER_DEFAULTLEFTDIRECTION;
ret.ulRightDirection = EAXFREQUENCYSHIFTER_DEFAULTRIGHTDIRECTION;
return ret;
}()};
props = defprops;
}
void EaxFrequencyShifterCommitter::Get(const EaxCall &call, const EAXFREQUENCYSHIFTERPROPERTIES &props)
{
switch(call.get_property_id())
{
case EAXFREQUENCYSHIFTER_NONE: break;
case EAXFREQUENCYSHIFTER_ALLPARAMETERS: call.set_value<Exception>(props); break;
case EAXFREQUENCYSHIFTER_FREQUENCY: call.set_value<Exception>(props.flFrequency); break;
case EAXFREQUENCYSHIFTER_LEFTDIRECTION: call.set_value<Exception>(props.ulLeftDirection); break;
case EAXFREQUENCYSHIFTER_RIGHTDIRECTION: call.set_value<Exception>(props.ulRightDirection); break;
default: fail_unknown_property_id();
}
}
void EaxFrequencyShifterCommitter::Set(const EaxCall &call, EAXFREQUENCYSHIFTERPROPERTIES &props)
{
switch(call.get_property_id())
{
case EAXFREQUENCYSHIFTER_NONE: break;
case EAXFREQUENCYSHIFTER_ALLPARAMETERS: defer<AllValidator>(call, props); break;
case EAXFREQUENCYSHIFTER_FREQUENCY: defer<FrequencyValidator>(call, props.flFrequency); break;
case EAXFREQUENCYSHIFTER_LEFTDIRECTION: defer<LeftDirectionValidator>(call, props.ulLeftDirection); break;
case EAXFREQUENCYSHIFTER_RIGHTDIRECTION: defer<RightDirectionValidator>(call, props.ulRightDirection); break;
default: fail_unknown_property_id();
}
}
#endif // ALSOFT_EAX
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