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alcModulator.c File Reference
#include "config.h"
#include <math.h>
#include <stdlib.h>
#include "alMain.h"
#include "alFilter.h"
#include "alAuxEffectSlot.h"
#include "alError.h"
#include "alu.h"

Go to the source code of this file.


#define DECL_TEMPLATE(func)


typedef struct ALmodulatorState ALmodulatorState


static __inline ALfloat hpFilter1P (FILTER *iir, ALuint offset, ALfloat input)
ALeffectStateModulatorCreate (void)
static ALvoid ModulatorDestroy (ALeffectState *effect)
static ALboolean ModulatorDeviceUpdate (ALeffectState *effect, ALCdevice *Device)
static ALvoid ModulatorProcess (ALeffectState *effect, ALuint SamplesToDo, const ALfloat *RESTRICT SamplesIn, ALfloat(*RESTRICT SamplesOut)[BUFFERSIZE])
static ALvoid ModulatorUpdate (ALeffectState *effect, ALCdevice *Device, const ALeffectslot *Slot)
static __inline ALfloat Saw (ALuint index)
static __inline ALfloat Sin (ALuint index)
static __inline ALfloat Square (ALuint index)

Macro Definition Documentation

#define DECL_TEMPLATE (   func)
static void Process##func(ALmodulatorState *state, ALuint SamplesToDo, \
const ALfloat *RESTRICT SamplesIn, \
ALfloat (*RESTRICT SamplesOut)[BUFFERSIZE]) \
{ \
const ALuint step = state->step; \
ALuint index = state->index; \
ALfloat samp; \
for(i = 0;i < SamplesToDo;i++) \
{ \
samp = SamplesIn[i]; \
index += step; \
samp *= func(index); \
samp = hpFilter1P(&state->iirFilter, 0, samp); \
for(k = 0;k < MaxChannels;k++) \
SamplesOut[k][i] += state->Gain[k] * samp; \
} \
state->index = index; \
static __inline ALfloat hpFilter1P(FILTER *iir, ALuint offset, ALfloat input)
Definition: alcModulator.c:72
int32_t k
Definition: e_log.c:102
GLenum func
Definition: SDL_opengl.h:5654
float ALfloat
Definition: al.h:68
Definition: alcModulator.c:54
GLuint index
Definition: glew.h:1800
unsigned int ALuint
Definition: al.h:59
#define const
Definition: zconf.h:91
struct ALmodulatorState ALmodulatorState
int i
Definition: pngrutil.c:1377
Definition: alMain.h:556

Definition at line 85 of file alcModulator.c.


Definition at line 52 of file alcModulator.c.

Referenced by Square().


Definition at line 54 of file alcModulator.c.


Definition at line 53 of file alcModulator.c.

Referenced by ModulatorUpdate(), Saw(), and Sin().

Typedef Documentation

typedef struct ALmodulatorState ALmodulatorState

OpenAL cross platform audio library Copyright (C) 2009 by Chris Robinson. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details.

You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Or go to http://www.gnu.org/copyleft/lgpl.html

Function Documentation

static __inline ALfloat hpFilter1P ( FILTER iir,
ALuint  offset,
ALfloat  input 

Definition at line 72 of file alcModulator.c.

References FILTER::coeff, FILTER::history, and sort_controllers::output.

ALeffectState* ModulatorCreate ( void  )
static ALvoid ModulatorDestroy ( ALeffectState effect)

Definition at line 118 of file alcModulator.c.

References free.

Referenced by ModulatorCreate().

static ALboolean ModulatorDeviceUpdate ( ALeffectState effect,
ALCdevice Device 

Definition at line 124 of file alcModulator.c.

References AL_TRUE.

Referenced by ModulatorCreate().

static ALvoid ModulatorProcess ( ALeffectState effect,
ALuint  SamplesToDo,
const ALfloat *RESTRICT  SamplesIn,
ALfloat(*)  SamplesOut[BUFFERSIZE] 

Definition at line 164 of file alcModulator.c.

Referenced by ModulatorCreate().

static __inline ALfloat Saw ( ALuint  index)

Definition at line 61 of file alcModulator.c.


static __inline ALfloat Sin ( ALuint  index)

Definition at line 56 of file alcModulator.c.

References F_PI, and WAVEFORM_FRACONE.

static __inline ALfloat Square ( ALuint  index)

Definition at line 66 of file alcModulator.c.