shape_sampler Class Reference

Public Member Functions
	shape_sampler ()
void	init (unsigned long total_samples)
void	close ()
void	operator++ ()
int	done ()
unsigned long	operator* ()
unsigned long	finalsample () const

Public Attributes
unsigned long	shape [SHAPE_SAMPLES+1]

Detailed Description

Definition at line 136 of file softvolume.cpp.

Constructor & Destructor Documentation

shape_sampler::shape_sampler ( )

inline

Definition at line 138 of file softvolume.cpp.

      : shape_sampler() : pos( 0 )
        , step( 0 ) {}

Member Function Documentation

void shape_sampler::close ( void  )

inline

Definition at line 147 of file softvolume.cpp.

    {
        this->pos = this->step = 0;
    }

int shape_sampler::done ( )

inline

Definition at line 156 of file softvolume.cpp.

References SHAPE_SAMPLE_ORDER.

Referenced by sdl_softvolume_effect_S16LSB(), sdl_softvolume_effect_S16MSB(), sdl_softvolume_effect_S8(), sdl_softvolume_effect_U16LSB(), sdl_softvolume_effect_U16MSB(), and sdl_softvolume_effect_U8().

    {
        return ( (this->pos>>16)&~( (1<<SHAPE_SAMPLE_ORDER)-1 ) ) != 0;
    }

unsigned long shape_sampler::finalsample ( ) const

inline

Definition at line 165 of file softvolume.cpp.

References shape, and SHAPE_SAMPLES.

Referenced by sdl_softvolume_effect_S16LSB(), sdl_softvolume_effect_S16MSB(), sdl_softvolume_effect_S8(), sdl_softvolume_effect_U16LSB(), sdl_softvolume_effect_U16MSB(), and sdl_softvolume_effect_U8().

    {
        return shape[SHAPE_SAMPLES];
    }

void shape_sampler::init ( unsigned long  total_samples)

inline

Definition at line 141 of file softvolume.cpp.

References SHAPE_SAMPLES.

Referenced by Mix_SoftVolume_Change().

    {
        if (total_samples == 0) total_samples = 1;
        this->step = (SHAPE_SAMPLES<<16)/total_samples;
        this->pos  = 0;
    }

unsigned long shape_sampler::operator* ( )

inline

Definition at line 160 of file softvolume.cpp.

References interpolateF16F16(), shape, and SHAPE_SAMPLE_SAFEPOS.

    {
        return interpolateF16F16( shape[SHAPE_SAMPLE_SAFEPOS( this->pos>>16 )], shape[SHAPE_SAMPLE_SAFEPOS(
                                                                                          this->pos>>16 )+1], this->pos&0xFFFF );
    }

void shape_sampler::operator++ ( )

inline

Definition at line 152 of file softvolume.cpp.

    {
        this->pos += this->step;
    }

Member Data Documentation

unsigned long shape_sampler::shape[SHAPE_SAMPLES+1]

Definition at line 175 of file softvolume.cpp.

Referenced by finalsample(), Mix_SoftVolume_Change(), and operator*().

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The documentation for this class was generated from the following file:

• src/networking/softvolume.cpp